If I tell you that humans and chimpanzees share a common ancestor, you may doubt the truth of my
statement
and search (in vain) for evidence that it is false.
Richard-Dawkins-Unweaving-the-Rainbow
Seconds, minutes, hours, days and years are easy for us.
We can cope with centuries.
When we come to millennia - thousands of years - our spines begin to tingle.
Epic myths of Homer; deeds of the Greek gods Zeus, Apollo and Artemis; of the Jewish heroes Abraham, Moses and David, and their terrifying god Yahweh; of the ancient Egyptians and the Sun God Ra: these inspire poets and give us that frisson of immense age.
We seem to be peering back through
eerie mists into the echoing strangeness of antiquity. Yet, on the time- scale of our trilobite, those vaunted antiquities are scarcely yesterday.
Many dramatizations have been offered, and I shall essay another. Let us write the history of one year on a single sheet of paper. That doesn't leave much room for detail. It is roughly equivalent to the lightning 'Round-up of the Year' that newspapers trot out on 31 December. Each month gets a few sentences. Now on another sheet of paper write the history of the previous year. Carry on back through the years, sketching, at a rate of a year per sheet, the outline of what happened in each year. Bind the pages into a book and number them. Gibbon's Decline and Fall of the Roman Empire (1776-88) spans some 13 centuries in six volumes of about 500 pages each, so it is covering the ground at approximately the rate we are talking about.
'Another damned, thick, square book. Always scribble, scribble, scribble! Eh! Mr Gibbon? ' WILLIAM HENRY, FIRST DUKE OF GLOUCESTER (1829).
That splendid volume The Oxford Dictionary of Quotations (1992), from which I have just copied this remark, is itself a damned thick, square doorstop of a book, and about the right size to take us back to the time of Queen Elizabeth I. We have an approximate yardstick of time: 4 inches or 10 cm of book thickness to record the history of one millennium. Having established our yardstick, let's work back to the alien world of geological deep time. We place the book of the most recent past flat on the ground, then stack books of earlier centuries on top of it. We now stand beside the pile of books as a living yardstick. If we want to read about Jesus, say, we must select a volume 20 cm from the ground or just above the ankle.
A famous archaeologist dug up a bronze-age warrior with a beautifully preserved face mask and exulted: 'I have gazed upon the face of Agamemnon. ' He was being poetically awed at his penetration of fabled antiquity. To find Agamemnon in our pile of books, you'd have to stoop to a level about halfway up your shins. Somewhere in the vicinity you'd find Petra ('A rose-red city, half as old as time'), Ozymandias, king of kings ('Look on my works, ye Mighty, and despair') and that enigmatic wonder of the ancient world the Hanging Gardens of Babylon. Ur of the Chaldees, and Uruk the city of the legendary hero Gilgamesh had their day slightly earlier and you'd find tales of their foundation a little higher up your legs. Around here is the oldest date of all, according to the seventeenth- century archbishop James Ussher, who calculated 4004 BC as the date
of the creation of Adam and Eve.
The taming of fire was climacteric in our history; from it stems most of technology. How high in our stack of books is the page on which this epic discovery is recorded? The answer is quite a surprise when you recall that you could comfortably sit down on the pile of books encompassing the whole of recorded history. Archaeological traces suggest, that fire was discovered by our Homo erectus ancestors, though whether they made fire, or just carried it about and used it we don't know. They had fire by half a million years ago, so to consult the volume in our analogy recording the discovery you'd have to climb up to a level somewhat higher than the Statue of Liberty. A dizzy height, especially given that Prometheus, the legendary bringer of fire, gets his first mention a little below your knee in our pile of books. To read about Lucy and our australopithecine ancestors in Africa, you'd need to climb higher than any building in Chicago. The biography of the common ancestor we share with chimpanzees would be a sentence in a book stacked twice as high again.
But we've only just begun our journey back to the trilobite. How high would the stack of books have to be in order to accommodate the page where the life and death of this trilobite, in its shallow Cambrian sea, is perfunctorily celebrated? The answer is about 56 kilometres, or 35 miles. We aren't used to dealing with heights like this. The summit of mount Everest is less than 9 km above sea level. We can get some idea of the age of the trilobite if we topple the stack through 90 degrees. Picture a bookshelf three times the length of Manhattan island, packed with volumes the size of Gibbon's Decline and Fall. To read your way back to the trilobite, with only one page allotted to each year, would be more laborious than spelling through all 14 million volumes in the Library of Congress. But even the trilobite is young compared with the age of life itself. The first living creatures, the shared ancestors of the trilobite, of bacteria and of ourselves, have their ancient chemical lives recorded in volume 1 of our saga. Volume 1 is at the far end of the marathon bookshelf. The entire shelf would stretch from London to the Scottish borders. Or right across Greece from the Adriatic to the Aegean.
Perhaps these distances are still unreal. The art in thinking of analogies for large numbers is not to go off the scale of what people can comprehend. If we do that, we are no better off with an analogy than with the real thing. Reading your way through a work of history, whose shelved volumes stretch from Rome to Venice, is an incomprehensible task, just about as incomprehensible as the bald figure 4,000 million years.
Here is another analogy, one that has been used before. Fling your arms wide in an expansive gesture to span all of evolution from its origin at your left fingertip to today at your right fingertip. All the way across your
midline to well past your right shoulder, life consists of nothing but bacteria. Many-celled, invertebrate life flowers somewhere around your right elbow. The dinosaurs originate in the middle of your right palm, and go extinct around your last finger joint. The whole story of Homo sapiens and our predecessor Homo erectus is contained in the thickness of one nail-clipping. As for recorded history; as for the Sumerians, the Babylonians, the Jewish patriarchs, the dynasties of Pharaohs, the legions of Rome, the Christian Fathers, the Laws of the Medes and Persians which never change; as for Troy and the Greeks, Helen and Achilles and Agamemnon dead; as for Napoleon and Hitler, the Beatles and Bill Clinton, they and everyone that knew them are blown away in the dust from one light stroke of a nail-file.
The poor are fast forgotten,
They outnumber the living, but where are all their bones? For every man alive there are a million dead. Has their dust gone into earth that it is never seen?
There should be no air to breathe, with it so thick. No space for wind to blow, nor rain to fall; Earth should be a cloud of dust, a soil of bones. With no room even, for our skeletons.
SACHEVERELL SITWELL, 'Agamemnon's Tomb' (1933)
Not that it matters, Sitwell's third line is inaccurate. It has been estimated that the people alive today make up a substantial proportion of the humans that have ever lived. But this just reflects the power of exponential growth. If we count generations instead of bodies, and especially if we go back beyond humankind to life's beginning, Sacheverell Sitwell's sentiment has a new force. Let us suppose that each individual in our direct female ancestry, from the first flowering of many- celled life a little over half a billion years ago, lay down and died on the grave of her mother, eventually to be fossilized. As in the successive layers of the buried city of Troy, there would be much compression and shaking down, so let us assume that each fossil in the series was flattened to the thickness of a 1 cm pancake. What depth of rock should we need, if we are to accommodate our continuous fossil record? The answer is that the rock would have to be about 1,000 km or 600 miles thick. This is about ten times the thickness of the earth's crust.
The Grand Canyon, whose rocks, from deepest to shallowest, span most of the period we are now talking about, is only around one mile deep. If the strata of the Grand Canyon were stuffed with fossils and no intervening rock, there would be room within its depth to accommodate only about one 600th of the generations that have successively died. This
calculation helps us to keep in proportion fundamentalist demands for a 'continuous' series of gradually changing fossils before they will accept the fact of evolution. The rocks of the earth simply don't have room for such a luxury - not by many orders of magnitude. Whichever way you look at it, only an extremely small proportion of creatures has the good fortune to be fossilized. As I have said before, I should consider it an honour.
The number of the dead long exceedeth all that shall live. The night of time far surpasseth the day, and who knows when was the Aequinox? Every houre addes unto that current Arithmetique, which scarce stands one moment. . . Who knows whether the best of men be known, or whether there be not more remarkable persons forgot than any that stand remembred in the known account of time?
SIR THOMAS BROWNE, Urne Buriall (1658)
2
DRAWING ROOM OF DUKES
You may grind their souls in the selfsame mill, You may bind them, heart and brow; But the poet will follow the rainbow still. And his brother will follow the plow.
JOHN BOYLE O'REILLY (1844-90) 'The Rainbow's Treasure'
Breaking through the anaesthetic of familiarity is what poets do best. It is their business. But poets, too many of them and for too long, have overlooked the goldmine of inspiration offered by science. W. H. Auden, leader of his generation of poets, was flatteringly sympathetic to scientists but even he singled out their practical side, comparing scientists, to their advantage, with politicians, but missing the poetic possibilities of science itself.
The true men of action in our time, those who transform the world, are not the politicians and statesmen, but the scientists. Unfortunately poetry cannot celebrate them, because their deeds are concerned with things, not persons, and are, therefore, speechless. When I find myself in the company of scientists, I feel like a shabby curate who has strayed by mistake into a drawing room full of dukes.
The Dyer's Hand, 'Poet and the City' (1965)
Ironically that is pretty much how I and many other scientists feel when in the company of poets. Indeed - and I shall return to the point - this is probably our culture's normal evaluation of the relative standings of scientists and poets, which may have been why Auden bothered to say the opposite. But why was he so definite that poetry cannot celebrate scientists and their deeds? Scientists may transform the world more effectively than politicians and statesmen, but that is not all they do, and certainly not all they could do. Scientists transform the way we think about the larger universe. They assist the imagination back to the hot birth of time and forward to the eternal cold, or, in Keats's words, to 'spring direct towards the galaxy. Isn't the speechless universe a worthy theme? Why would a poet celebrate only persons, and not the slow grind of natural forces that made them? Darwin tried manfully, but Darwin's talents lay elsewhere than in poetry:
It is interesting to contemplate an entangled bank, clothed with many- plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us . . . Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
On the Origin of Species (1859)
William Blake's interests were religious and mystical but, word for word, I wish I had written the following famous quatrain and, if I had, "my inspiration and meaning would have been very different.
To see a world in a grain of sand And a heaven in a wild flower Hold infinity in the palm of your hand
And eternity in an hour.
'Auguries of Innocence' (c. 1803)
The stanza can be read as all about science, all about standing in the moving spotlight, about taming space and time, about the very large built from the quantum graininess of the very small, a lone flower as a miniature of all evolution. The impulses to awe, reverence and wonder
which led Blake to mysticism (and lesser figures to paranormal superstition, as we shall see) are precisely those that lead others of us to science. Our interpretation is different but what excites us is the same. The mystic is content to bask in the wonder and revel in a mystery that we were not 'meant' to understand. The scientist feels the same wonder but is restless, not content; recognizes the mystery as profound, then adds, 'But we're working on it. '
Blake did not love science, even feared and despised it:
For Bacon and Newton, sheath'd in dismal steel, their terrors hang Like iron scourges over Albion; Reasonings like vast Serpents Infold around my limbs . . .
'Bacon, Newton, and Locke, Jerusalem (1804-20)
What a waste of poetic talent. And if, as fashionable commentators can be relied upon to insist, a political motive underlay his poem, it is still a waste; for politics and its preoccupations are so temporary, so trifling by comparison. It is my thesis that poets could better use the inspiration provided by science and that at the same time scientists must reach out to the constituency that I am identifying with, for want of a better word, poets.
It is not, of course, that science should be declaimed in verse. The rhyming couplets of Erasmus Darwin, Charles's grandfather, though surprisingly well regarded in their time, do not enhance the science. Nor, unless scientists happen to have the talents of a Carl Sagan, a Peter Atkins or a Loren Eiseley, should they cultivate a deliberately prose- poetic style in their expositions. Simple, sober clarity will do nicely, letting the facts and the ideas speak for themselves. The poetry is in the science.
Poets can be obscure, sometimes for good reason, and they rightly claim immunity from the obligation to explain their lines. 'Tell me Mr Eliot, how exactly does one measure out one's life with coffee spoons? ' would not, to say the least, have been a good conversation opener, but a scientist, rightly, expects to be asked equivalent questions. 'In what sense can a gene be selfish? ' 'What exactly flows down the River Out of Eden? ' I still spell out on demand the meaning of Mount Improbable and how slowly and gradually it is climbed. Our language must strive to enlighten and explain, and if we fail to convey our meaning by one approach we should go to work on another. But, without losing lucidity, indeed with added lucidity, we need to reclaim for real science that style of awed wonder that moved mystics like Blake. Real science has a just entitlement to the tingle in the spine which, at a lower level, attracts the fans of Star Trek
and Doctor Who and which, at the lowest level of all, has been lucratively hijacked by astrologers, clairvoyants and television psychics.
Hijacking by pseudo-scientists is not the only threat to our sense of wonder. Populist 'dumbing down' is another, and I shall return to it. A third is hostility from academics sophisticated in fashionable disciplines. A voguish fad sees science as only one of many cultural myths, no more true nor valid than the myths of any other culture. In the United States it is fed by justified guilt over the historical treatment of Native Americans. But the consequences can be laughable; as in the case of Kennewick Man.
Kennewick Man is a skeleton discovered in Washington State in 1996, carbon-dated to older than 9000 years. Anthropologists were intrigued by anatomical suggestions that he might be unrelated to typical Native Americans, and therefore might represent a separate early migration across what is now the Bering Strait, or even from Iceland. They were preparing to do all-important DNA tests when the legal authorities seized the skeleton, intending to hand it over to representatives of local Indian tribes, who proposed to bury it and forbid all further study. Naturally there was widespread opposition from the scientific and archaeological community. Even if Kennewick Man is an American Indian of some kind, it is highly unlikely that his affinities lie with whichever particular tribe happens to live in the same area 9,000 years later.
Native Americans have impressive legal muscle, and 'The Ancient One' might have been handed over to the tribes, but for a bizarre twist. The Asatru Folk Assembly, a group of worshippers of the Norse gods Thor and Odin, filed an independent legal claim that Kennewick Man was actually a Viking. This Nordic sect, whose views you may follow in the Summer 1997 issue of The Runestone, were actually allowed to hold a religious service over the bones. This upset the Yakama Indian community, whose spokesman feared that the Viking ceremony could be 'keeping Kennewick Man's spirit from finding his body. The dispute between Indians and Norsemen could well be settled by DNA comparison, and the Norsemen are quite keen to be put to this test. Scientific study of the remains would certainly cast fascinating light on the question of when humans first arrived in America. But Indian leaders resent the very idea of studying this question, because they believe their ancestors have been in America since the creation. As Armand Minthorn, religious leader of the Umatilla tribe, put it; 'From our oral histories, we know that our people have been part of this land since the beginning of time. We do not believe our people migrated here from another continent, as the scientists do. '
Perhaps the best policy for the archaeologists would be to declare themselves a religion, with DNA fingerprints their sacramental totem. Facetious but, such is the climate in the United States at the end of the twentieth century, it is possibly the only recourse that would work. If you say, 'Look, here is overwhelming evidence from carbon dating, from mitochondrial DNA, and from archaeological analyses of pottery, that X is the case' you will get nowhere. But if you say, 'It is a fundamental and unquestioned belief of my culture that X is the case' you will immediately hold a judge's attention.
It will also hold the attention of many in the academic community who, in the late twentieth century, have discovered a new form of anti- scientific rhetoric, sometimes called the 'post-modem critique' of science. The most thorough whistle-blowing on this kind of thing is Paul Gross and Norman Levitt's splendid book Higher Superstition: The Academic Left and its Quarrels with Science (1994). The American anthropologist Matt Cartmill sums up the basic credo:
Anybody who claims to have objective knowledge about anything is trying to control and dominate the rest of us. . . There are no objective facts. All supposed facts' are contaminated with theories, and all theories are infested with moral and political doctrines . . . Therefore, when some guy in a lab coat tells you that such and such is an objective fact . . . he must have a political agenda up his starched white sleeve. 'Oppressed by evolution'. Discover magazine (1998)
There are even a few vocal fifth columnists within science itself who hold exactly these views, and use them to waste the time of the rest of us.
Cartmill's thesis is that there is an unexpected and pernicious alliance between the know-nothing fundamentalist religious right and the sophisticated academic left. A bizarre manifestation of the alliance is their joint opposition to the theory of evolution. The opposition of the fundamentalists is obvious. That of the left is a compound of hostility to science in general, of 'respect' (weasel word of our time) for tribal creation myths, and of various political agendas. Both these strange bedfellows share a concern for 'human dignity' and take offence at treating humans as 'animals'. Barbara Ehrenreich and Janet Mcintosh make a similar point about what they call 'secular creationists' in their 1997 article 'The New Creationism' in The Nation magazine.
Purveyors of cultural relativism and the 'higher superstition' are apt to pour scorn on the search for truth. This partly stems from the conviction that truths are different in different cultures (that was the point of the Kennewick Man story) and partly from the inability of philosophers of science to agree about truth anyway. There are, of course, genuine
philosophical difficulties. Is a truth just a so-far-unfalsified hypothesis? What status does truth have in the strange, uncertain world of quantum theory? Is anything ultimately true? On the other hand, no philosopher has any trouble using the language of truth when falsely accused of a crime, or when suspecting his wife of adultery. 'Is it true? ' feels like a fair question, and few who ask it in their private lives would be satisfied with logic-chopping sophistry in response. Quantum thought experimenters may not know in what sense it is 'true' that Schrodinger's cat is dead. But everybody knows what is true about the statement that my childhood cat Jane is dead. And there are lots of scientific truths where what we claim is only that they are true in the same everyday sense.
If I tell you that humans and chimpanzees share a common ancestor, you may doubt the truth of my statement and search (in vain) for evidence that it is false. But we both know what it would mean for it to be true, and what it would mean for it to be false. It is in the same category as 'Is it true that you were in Oxford on the night of the crime? ', not in the same difficult category as 'Is it true that a quantum has position? ' Yes, there are philosophical difficulties about truth, but we can get a long way before we have to worry about them. Premature erection of alleged philosophical problems is sometimes a smokescreen for mischief.
'Dumbing down' is a very different kind of threat to scientific sensibility. The 'Public Understanding of Science' movement, provoked in America by the Soviet Union's triumphant entry into the space race and driven today, at least in Britain, by public alarm over a decline in applications for science places at universities, is going demotic. 'Science Weeks' and 'Science Fortnights' betray an anxiety among scientists to be loved.
Funny hats and larky voices proclaim that science is fun, fun, fun. Whacky 'personalities' perform explosions and funky tricks. I recently attended a briefing session where scientists were urged to put on events in shopping malls designed to lure people into the joys of science. The speedier advised us to do nothing that might conceivably be seen as a turn-off. Always make your science 'relevant' to ordinary people's lives, to what goes on in their own kitchen or bathroom. Where possible, choose experimental materials that your audience can eat at the end. At the last event organized by the speaker himself, the scientific phenomenon that really grabbed attention was the urinal that automatically flushed as you stepped away. The very word science is best avoided, we were told, because 'ordinary people' see it as threatening.
I have little doubt that such dumbing down will be successful if our aim is to maximize the total population count at our 'event'. But when I protest that what is being marketed here is not real science, I am rebuked for my 'elitism' and told that luring people in, by any means, is a necessary first step. Well, if we must use the word (I wouldn't), maybe
elitism is not such a terrible thing. And there is a great difference between an exclusive snobbery and an embracing, flattering elitism that strives to help people to raise their game and join the elite. A calculated dumbing down is the worst: condescending and patronizing. When I gave these views in a recent lecture in America, a questioner at the end, no doubt with a glow of political self-congratulation in his white male heart, had the insulting impertinence to suggest that dumbing down might be necessary to bring 'minorities and women' to science.
I worry that to promote science as all fun and larky and easy is to store up trouble for the future. Real science can be hard (well, challenging, to give it a more positive spin) but, like classical literature or playing the violin, worth the struggle. If children are lured into science, or any other worthwhile occupation, by the promise of easy fun, what are they going to do when they finally have to confront the reality? Recruiting advertisements for the army rightly don't promise a picnic: they seek young people dedicated enough to stand the pace. 'Fun' sends the wrong signals and might attract people to science for the wrong reasons. Literary scholarship is in danger of becoming similarly undermined. Idle students are seduced into a debased 'Cultural Studies', on the promise that they will spend their time deconstructing soap operas, tabloid princesses and Tellytubbies. Science, like proper literary studies, can be hard and challenging but science is - also like proper literary studies - wonderful. Science can pay its way but, like great art, it shouldn't have to. And we shouldn't need whacky personalities and fun explosions to persuade us of the value of a life spent finding out why we have life in the first place.
I fear that I may have been too negative in this attack, but there are times when a pendulum has swung far enough and needs a strong push in the other direction to restore equilibrium. Of course science is fun, in the sense that it is the very opposite of boring. It can enthral a good mind for a lifetime. Certainly, practical demonstrations can help to make ideas vivid and lasting in the mind. From Michael Faraday's Royal Institution Christmas Lectures to Richard Gregory's Bristol Exploratory, children have been excited by hands-on experience of true science. I have myself been honoured to give the Christmas Lectures, in their modern televised form, and I depended upon plenty of hands-on demonstrations. Faraday never dumbed down. I am attacking only the kind of populist whoring that defiles the wonder of science.
Annually there is a large dinner in London at which prizes for the year's best popular science books are awarded. One prize is for children's books on science, and it was recently won by a book about insects and other 'horrible ugly bugs'. That kind of language is perhaps not best calculated to arouse the poetic sense of wonder, but let us be tolerant and
acknowledge other ways of attracting the interest of children. Harder to forgive were the antics of the chairman of the judges, a well-known television personality (who had recently sold out to the lucrative genre of 'paranormal' television). Squeaking with game-show levity, she incited
the large audience (of adults) to join her in repeated choruses of audible grimaces at the contemplation of the horrible 'ugly bugs'. 'Eeeu-urrrgh! Yuck! Yeeyuck! Eeeeeuurrrgh! ' That kind of vulgar fun demeans the wonder of science, and risks 'turning off' the very people best qualified to appreciate it and inspire others: real poets and true scholars of literature.
By poets, of course, I intend artists of all kinds. Michelangelo and Bach were paid to celebrate the sacred themes of their times and the results will always strike human senses as sublime. But we shall never know how such genius might have responded to alternative commissions. As Michelangelo's mind moved upon silence 'Like a long-legged fly upon the stream', what might he not have painted if he had known the contents of one nerve cell from a long-legged fly? Think of the 'Dies Irae' that might have been wrung from Verdi by the contemplation of the dinosaurs' fate when, 65 million years ago, a mountain-sized rock screamed out of deep space at 10,000 miles per hour straight at the Yucatan peninsula and the world went dark. Try to imagine Beethoven's 'Evolution Symphony, Haydn's oratorio on 'The Expanding Universe', or Milton's epic The Milky Way. As for Shakespeare . . . But we don't have to aim so high. Lesser poets would be a fine start.
I can imagine, in some otherworld
Primeval-dumb, far back
In that most awful stillness, that only gasped and hummed. Humming-birds raced down the avenues.
Before anything had a soul.
While life was a heave of matter, half inanimate.
This little bit chipped off in brilliance
And went whizzing through the slow, vast, succulent stems.
I believe there were no flowers then.
In the world where the humming-bird flashed ahead of creation.
I believe he pierced the slow vegetable veins with his long beak. Probably he was big
As mosses, and little lizards, they say, were once big.
Probably he was a jabbing, terrifying monster.
We look at him through the wrong end of the telescope of Time, Luckily for us. Unrhyming Poems, 1928
D. H. Lawrence's poem about hummingbirds is almost wholly inaccurate and therefore, superficially, unscientific. Yet, in spite of this, it is a passable shot at how a poet might take inspiration from geological time. Lawrence lacked only a couple of tutorials in evolution and taxonomy to
bring his poem within the pale of accuracy, and it would be no less arresting and thought-provoking as a poem. After another tutorial Lawrence, the miner's son, might have turned fresh eyes on his coal fire, whose glowing energy last saw the light of day - was the light of day - when it warmed the Carboniferous tree ferns, to be laid down in earth's dark cellar and sealed for three million centuries. A larger obstacle would have been Lawrence's hostility to what he wrongly thought of as the anti- poetic spirit of science and scientists, as when he grumbled that
Knowledge has killed the sun, making it a ball of gas with spots . . . The world of reason and science . . . this is the dry and sterile world the abstracted mind inhabits.
I am almost reluctant to admit that my favourite of all poets is that confused Irish mystic William Butler Yeats. In old age Yeats sought a theme and sought for it in vain, finally returning, in desperation, to enumerate old themes of his young manhood. How sad to give up, wrecked among heathen dreams, marooned amid the faeries and fey Irishry of his affected youth when, an hour's drive from Yeats's tower, Ireland housed the largest astronomical telescope then built. This was the 72-inch reflector, built before Yeats was born by William Parsons, third earl of Rosse, at Birr Castle (where it has now been restored by the seventh earl). What might a single glance at the Milky Way through the eyepiece of the 'Leviathan of Parsonstown' not have done for the frustrated poet who, as a young man, had written these unforgettable lines?
Be you still, be you still, trembling heart; Remember the wisdom out of the old days:
Him who trembles before the flame and the flood, And the winds that blow through the starry ways, Let the starry winds and the flame and the flood Cover over and hide, for he has no part
With the lonely, majestical multitude.
from The Wind Among the Reeds (1899)
Those would make fine last words for a scientist, as would, now that I think about it, the poet's own epitaph, 'Cast a cold eye/On life, on death. / Horseman, pass by! '
But, like Blake, Yeats was no lover of science, dismissing it (absurdly), as the 'opium of the suburbs', and calling us to 'Move upon Newton's town. ' That is sad, and the kind of thing that drives me to write my books.
Keats, too, complained that Newton had destroyed the poetry of the rainbow by explaining it. By more general implication, science is poetry's
killjoy, dry and cold, cheerless, overbearing and lacking in everything that a young Romantic might desire. To proclaim the opposite is one purpose of this book, and I shall here limit myself to the untestable speculation that Keats, like Yeats, might have been an even better poet if he had gone to science for some of his inspiration.
It has been pointed out that Keats's medical education may have equipped him to recognize the mortal symptoms of his own tuberculosis, as when he ominously diagnosed his own arterial blood. Science, for him, would not have been the bringer of good news, so it is less wonder if he found solace in an antiseptic world of classical myth, losing himself among panpipes and naiads, nymphs and dryads, just as Yeats was to do among their Celtic counterparts. Irresistible as I find both poets, forgive my wondering whether the Greeks would have recognized their legends in Keats, or the Celts theirs in Yeats. Were these great poets as well served as they could have been by their sources of inspiration? Did prejudice against reason weigh down the wings of poesy?
It is my thesis that the spirit of wonder which led Blake to Christian mysticism, Keats to Arcadian myth and Yeats to Fenians and fairies, is the very same spirit that moves great scientists; a spirit which, if fed back to poets in scientific guise, might inspire still greater poetry. In support, I adduce the less elevated genre of science fiction. Jules Verne, H. G. Wells, Olaf Stapledon, Robert Heinlein, Isaac Asimov, Arthur C. Clarke, Ray Bradbury and others have used prose-poetry to evoke the romance of scientific themes, in some cases explicitly linking them to the myths of antiquity. The best of science fiction seems to me an important literary form in its own right, snobbishly underrated by some scholars of literature. More than one reputable scientist has been introduced to what I am calling the spirit of wonder through an early fascination with science fiction.
At the lower end of the science fiction market the same spirit has been abused for more sinister ends, but the bridge to mystical and romantic poetry can still be discerned. At least one major religion, Scientology, was founded by a science fiction writer, L. Ron Hubbard (whose entry in the Oxford Dictionary of Quotations reads, 'If you really want to make a million . . . the quickest way is to start your own religion'). The now dead adherents of the cult of 'Heaven's Gate' probably never knew that the phrase appears twice in Shakespeare and twice in Keats, but they knew all about Star Trek and were obsessed with it. The language of their website is a preposterous caricature of misunderstood science, laced with bad romantic poetry.
The cult of The X-Files has been defended as harmless because it is, after all, only fiction. On the face of it, that is a fair defence. But regularly
recurring fiction - soap operas, cop series find the like - are legitimately criticized if, week after week, they systematically present a one-sided view of the world. The X-Files is a television series in which, every week, two FBI agents face a mystery. One of the two, Scully, favours a rational, scientific explanation; the other agent, Mulder, goes for an explanation which either is supernatural or, at very least, glorifies the inexplicable. The problem with The X-Files is that routinely, relentlessly, the supernatural explanation, or at least the Mulder end of the spectrum, usually turns out to be the answer. I'm told that, in recent episodes, even the sceptical agent Scully is starting to have her confidence shaken, and no wonder. But isn't it just harmless fiction, then? No, I think the defence rings hollow. Imagine a television series in which two police officers solve a crime each week. Every week there is one black suspect and one white suspect. One of the two detectives is always biased towards the black suspect, the other biased towards the white. And, week after week, the black suspect turns out to have done it. So, what's wrong with that? After all, it's only fiction! Shocking as it is, I believe the analogy to be a completely fair one. I am not saying that supernaturalist propaganda is as dangerous or unpleasant as racist propaganda. But The X-Files systematically purveys an anti-rational view of the world which, by virtue of its recurrent persistence, is insidious.
Another bastard form of science fiction converges upon Tolkienian faked- up myth. Physicists rub shoulders with wizards, interplanetary aliens escort princesses sidesaddle on unicorns, thousand-port-holed space stations loom out of the same mist as medieval castles with ravens (or even pterodactyls) wheeling around their gothic turrets. True, or calculatedly modified, science is replaced by magic, which is the easy way out.
Good science fiction has no dealings with fairytale magic spells, but is premised on the world as an orderly place. There is mystery, but the universe is not frivolous nor light-fingered in its changeability. If you put a brick on a table it stays there unless something moves it, even if you have forgotten it is there. Poltergeists and sprites don't intervene and
hurl it about for reasons of mischief or caprice. Science fiction may
tinker with the laws of nature, advisedly and preferably one law at a time, but it cannot abolish lawfulness itself and remain good science fiction. Fictional computers may become consciously malevolent or even, in Douglas Adams's masterly science comedies, paranoid; spaceships may warp-drive themselves to distant galaxies using some postulated future technology, but the decencies of science are essentially maintained. Science allows mystery but not magic, strangeness beyond wild
imagining but no spells or witchery, no cheap and easy miracles. Bad science fiction loses its grip on moderated lawfulness and substitutes the 'anything goes' profligacy of magic. The worst of bad science fiction joins
hands with the 'paranormal', that other lazy, misbegotten child of the sense of wonder which ought to be motivating true science. The popularity of this kind of pseudo-science at least seems to suggest that the sense of wonder is widespread and heartfelt, however misapplied it may be. Here lies the only consolation I can find in the pre-millennial media obsession with the paranormal; with the immensely successful X- Files and with popular television shows in which routine conjuring tricks are misrepresented as violating natural law.
But let us return to Auden's pleasing compliment and our inversion of it. Why do some scientists feel like shabby curates among literary dukes, and why do many in our society perceive them so?
Undergraduates specializing in science at my own university have occasionally remarked to me (wistfully, for peer pressure in their cohort is strong) that their subject is not seen as 'cool'. This was illustrated for me by a smart young journalist whom I met on a recent BBC television discussion series. She seemed almost intrigued to meet a scientist, for she confided that when at Oxford she had never known any. Her circle had regarded them from a distance as 'grey men', especially pitying their habit of getting out of bed before lunch. Of all absurd excesses, they attended 9 a. m. lectures and then worked through the morning in the labs. That great humanist and humanitarian statesman Jawaharlal Nehru, as befits the first prime minister of a country that cannot afford to mess about, had a more realistic view of science.
It is science alone that can solve the problems of hunger and poverty, of insanitation and illiteracy, of superstition and deadening custom and tradition, of vast resources running to waste, or a rich country inhabited by starving people . . . Who indeed could afford to ignore science today? At every turn we have to seek its aid . . . The future belongs to science and those who make friends with science*.
(1962)
Nevertheless, the confidence with which scientists sometimes state how much we know and how useful science can be, may spill over into arrogance. The distinguished embryologist Lewis Wolpert once admitted that science is occasionally arrogant, and he went on to remark, mildly, that science has a certain amount to be arrogant about. Peter Medawar, Carl Sagan and Peter Atkins have all said something similar.
* Correcting copy in August 1998, I cannot let this pass without sadly reflecting that Nehru would feel India's decision to carry out nuclear tests, unilaterally and in defiance of world opinion, to be a shocking abuse of science and a desecration of his memory and that of Mahatma Gandhi.
Arrogant or not, we at least pay lip-service to the idea that science advances by disproof of its hypotheses. Konrad Lorenz, father of ethology, characteristically exaggerated when he said he looked forward to disproving at least one pet hypothesis daily, before breakfast. But it is true that scientists, more than, say, lawyers, doctors or politicians, gain prestige among their peers by publicly admitting their mistakes. One of the formative experiences of my Oxford undergraduate years occurred when a visiting lecturer from America presented evidence that conclusively disproved the pet theory of a deeply respected elder statesman of our zoology department, the theory that we had all been brought up on. At the end of the lecture, the old man rose, strode to the front of the hall, shook the American warmly by the hand and declared,
in ringing emotional tones, 'My dear fellow, I wish to thank you. I have been wrong these fifteen years. ' We clapped our hands red. Is any other profession so generous towards its admitted mistakes?
Science progresses by correcting its mistakes, and makes no secret of what it still does not understand. Yet the opposite is widely perceived. Bernard Levin, when a columnist on The Times of London, sporadically published tirades against science, and on 11 October 1996 he wrote one headed 'God, me and Dr Dawkins', with the subtitle 'Scientists don't know and nor do I - but at least I know I don't know', above which was a cartoon of me as Michelangelo's Adam encountering the pointing finger of God. But as any scientist would vigorously protest, it is of the essence of science to know what we do not know. This is precisely what drives us to find out. In an earlier column, of 29 July 1994, Bernard Levin had made light of the idea of quarks ('The quarks are coming! The quarks are coming! Run for your lives . . . '). After further cracks about 'noble science' having given us mobile telephones, collapsible umbrellas and multi- striped toothpaste, he broke into mock seriousness:
Can you eat quarks? Can you spread them on your bed when the cold weather comes?
This sort of thing doesn't really deserve a reply, but the Cambridge metallurgist Sir Alan Cottrell gave it two sentences, in a Letter to the Editor a few days later.
Sir: Mr Bernard Levin asks 'Can you eat quarks? ' I estimate that he eats 500, 000,000, 000,000, 000,000, 000,001 quarks a day . . . Yours faithfully.
eerie mists into the echoing strangeness of antiquity. Yet, on the time- scale of our trilobite, those vaunted antiquities are scarcely yesterday.
Many dramatizations have been offered, and I shall essay another. Let us write the history of one year on a single sheet of paper. That doesn't leave much room for detail. It is roughly equivalent to the lightning 'Round-up of the Year' that newspapers trot out on 31 December. Each month gets a few sentences. Now on another sheet of paper write the history of the previous year. Carry on back through the years, sketching, at a rate of a year per sheet, the outline of what happened in each year. Bind the pages into a book and number them. Gibbon's Decline and Fall of the Roman Empire (1776-88) spans some 13 centuries in six volumes of about 500 pages each, so it is covering the ground at approximately the rate we are talking about.
'Another damned, thick, square book. Always scribble, scribble, scribble! Eh! Mr Gibbon? ' WILLIAM HENRY, FIRST DUKE OF GLOUCESTER (1829).
That splendid volume The Oxford Dictionary of Quotations (1992), from which I have just copied this remark, is itself a damned thick, square doorstop of a book, and about the right size to take us back to the time of Queen Elizabeth I. We have an approximate yardstick of time: 4 inches or 10 cm of book thickness to record the history of one millennium. Having established our yardstick, let's work back to the alien world of geological deep time. We place the book of the most recent past flat on the ground, then stack books of earlier centuries on top of it. We now stand beside the pile of books as a living yardstick. If we want to read about Jesus, say, we must select a volume 20 cm from the ground or just above the ankle.
A famous archaeologist dug up a bronze-age warrior with a beautifully preserved face mask and exulted: 'I have gazed upon the face of Agamemnon. ' He was being poetically awed at his penetration of fabled antiquity. To find Agamemnon in our pile of books, you'd have to stoop to a level about halfway up your shins. Somewhere in the vicinity you'd find Petra ('A rose-red city, half as old as time'), Ozymandias, king of kings ('Look on my works, ye Mighty, and despair') and that enigmatic wonder of the ancient world the Hanging Gardens of Babylon. Ur of the Chaldees, and Uruk the city of the legendary hero Gilgamesh had their day slightly earlier and you'd find tales of their foundation a little higher up your legs. Around here is the oldest date of all, according to the seventeenth- century archbishop James Ussher, who calculated 4004 BC as the date
of the creation of Adam and Eve.
The taming of fire was climacteric in our history; from it stems most of technology. How high in our stack of books is the page on which this epic discovery is recorded? The answer is quite a surprise when you recall that you could comfortably sit down on the pile of books encompassing the whole of recorded history. Archaeological traces suggest, that fire was discovered by our Homo erectus ancestors, though whether they made fire, or just carried it about and used it we don't know. They had fire by half a million years ago, so to consult the volume in our analogy recording the discovery you'd have to climb up to a level somewhat higher than the Statue of Liberty. A dizzy height, especially given that Prometheus, the legendary bringer of fire, gets his first mention a little below your knee in our pile of books. To read about Lucy and our australopithecine ancestors in Africa, you'd need to climb higher than any building in Chicago. The biography of the common ancestor we share with chimpanzees would be a sentence in a book stacked twice as high again.
But we've only just begun our journey back to the trilobite. How high would the stack of books have to be in order to accommodate the page where the life and death of this trilobite, in its shallow Cambrian sea, is perfunctorily celebrated? The answer is about 56 kilometres, or 35 miles. We aren't used to dealing with heights like this. The summit of mount Everest is less than 9 km above sea level. We can get some idea of the age of the trilobite if we topple the stack through 90 degrees. Picture a bookshelf three times the length of Manhattan island, packed with volumes the size of Gibbon's Decline and Fall. To read your way back to the trilobite, with only one page allotted to each year, would be more laborious than spelling through all 14 million volumes in the Library of Congress. But even the trilobite is young compared with the age of life itself. The first living creatures, the shared ancestors of the trilobite, of bacteria and of ourselves, have their ancient chemical lives recorded in volume 1 of our saga. Volume 1 is at the far end of the marathon bookshelf. The entire shelf would stretch from London to the Scottish borders. Or right across Greece from the Adriatic to the Aegean.
Perhaps these distances are still unreal. The art in thinking of analogies for large numbers is not to go off the scale of what people can comprehend. If we do that, we are no better off with an analogy than with the real thing. Reading your way through a work of history, whose shelved volumes stretch from Rome to Venice, is an incomprehensible task, just about as incomprehensible as the bald figure 4,000 million years.
Here is another analogy, one that has been used before. Fling your arms wide in an expansive gesture to span all of evolution from its origin at your left fingertip to today at your right fingertip. All the way across your
midline to well past your right shoulder, life consists of nothing but bacteria. Many-celled, invertebrate life flowers somewhere around your right elbow. The dinosaurs originate in the middle of your right palm, and go extinct around your last finger joint. The whole story of Homo sapiens and our predecessor Homo erectus is contained in the thickness of one nail-clipping. As for recorded history; as for the Sumerians, the Babylonians, the Jewish patriarchs, the dynasties of Pharaohs, the legions of Rome, the Christian Fathers, the Laws of the Medes and Persians which never change; as for Troy and the Greeks, Helen and Achilles and Agamemnon dead; as for Napoleon and Hitler, the Beatles and Bill Clinton, they and everyone that knew them are blown away in the dust from one light stroke of a nail-file.
The poor are fast forgotten,
They outnumber the living, but where are all their bones? For every man alive there are a million dead. Has their dust gone into earth that it is never seen?
There should be no air to breathe, with it so thick. No space for wind to blow, nor rain to fall; Earth should be a cloud of dust, a soil of bones. With no room even, for our skeletons.
SACHEVERELL SITWELL, 'Agamemnon's Tomb' (1933)
Not that it matters, Sitwell's third line is inaccurate. It has been estimated that the people alive today make up a substantial proportion of the humans that have ever lived. But this just reflects the power of exponential growth. If we count generations instead of bodies, and especially if we go back beyond humankind to life's beginning, Sacheverell Sitwell's sentiment has a new force. Let us suppose that each individual in our direct female ancestry, from the first flowering of many- celled life a little over half a billion years ago, lay down and died on the grave of her mother, eventually to be fossilized. As in the successive layers of the buried city of Troy, there would be much compression and shaking down, so let us assume that each fossil in the series was flattened to the thickness of a 1 cm pancake. What depth of rock should we need, if we are to accommodate our continuous fossil record? The answer is that the rock would have to be about 1,000 km or 600 miles thick. This is about ten times the thickness of the earth's crust.
The Grand Canyon, whose rocks, from deepest to shallowest, span most of the period we are now talking about, is only around one mile deep. If the strata of the Grand Canyon were stuffed with fossils and no intervening rock, there would be room within its depth to accommodate only about one 600th of the generations that have successively died. This
calculation helps us to keep in proportion fundamentalist demands for a 'continuous' series of gradually changing fossils before they will accept the fact of evolution. The rocks of the earth simply don't have room for such a luxury - not by many orders of magnitude. Whichever way you look at it, only an extremely small proportion of creatures has the good fortune to be fossilized. As I have said before, I should consider it an honour.
The number of the dead long exceedeth all that shall live. The night of time far surpasseth the day, and who knows when was the Aequinox? Every houre addes unto that current Arithmetique, which scarce stands one moment. . . Who knows whether the best of men be known, or whether there be not more remarkable persons forgot than any that stand remembred in the known account of time?
SIR THOMAS BROWNE, Urne Buriall (1658)
2
DRAWING ROOM OF DUKES
You may grind their souls in the selfsame mill, You may bind them, heart and brow; But the poet will follow the rainbow still. And his brother will follow the plow.
JOHN BOYLE O'REILLY (1844-90) 'The Rainbow's Treasure'
Breaking through the anaesthetic of familiarity is what poets do best. It is their business. But poets, too many of them and for too long, have overlooked the goldmine of inspiration offered by science. W. H. Auden, leader of his generation of poets, was flatteringly sympathetic to scientists but even he singled out their practical side, comparing scientists, to their advantage, with politicians, but missing the poetic possibilities of science itself.
The true men of action in our time, those who transform the world, are not the politicians and statesmen, but the scientists. Unfortunately poetry cannot celebrate them, because their deeds are concerned with things, not persons, and are, therefore, speechless. When I find myself in the company of scientists, I feel like a shabby curate who has strayed by mistake into a drawing room full of dukes.
The Dyer's Hand, 'Poet and the City' (1965)
Ironically that is pretty much how I and many other scientists feel when in the company of poets. Indeed - and I shall return to the point - this is probably our culture's normal evaluation of the relative standings of scientists and poets, which may have been why Auden bothered to say the opposite. But why was he so definite that poetry cannot celebrate scientists and their deeds? Scientists may transform the world more effectively than politicians and statesmen, but that is not all they do, and certainly not all they could do. Scientists transform the way we think about the larger universe. They assist the imagination back to the hot birth of time and forward to the eternal cold, or, in Keats's words, to 'spring direct towards the galaxy. Isn't the speechless universe a worthy theme? Why would a poet celebrate only persons, and not the slow grind of natural forces that made them? Darwin tried manfully, but Darwin's talents lay elsewhere than in poetry:
It is interesting to contemplate an entangled bank, clothed with many- plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and reflect that these elaborately constructed forms, so different from each other, and dependent on each other in so complex a manner, have all been produced by laws acting around us . . . Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of the higher animals, directly follows. There is grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.
On the Origin of Species (1859)
William Blake's interests were religious and mystical but, word for word, I wish I had written the following famous quatrain and, if I had, "my inspiration and meaning would have been very different.
To see a world in a grain of sand And a heaven in a wild flower Hold infinity in the palm of your hand
And eternity in an hour.
'Auguries of Innocence' (c. 1803)
The stanza can be read as all about science, all about standing in the moving spotlight, about taming space and time, about the very large built from the quantum graininess of the very small, a lone flower as a miniature of all evolution. The impulses to awe, reverence and wonder
which led Blake to mysticism (and lesser figures to paranormal superstition, as we shall see) are precisely those that lead others of us to science. Our interpretation is different but what excites us is the same. The mystic is content to bask in the wonder and revel in a mystery that we were not 'meant' to understand. The scientist feels the same wonder but is restless, not content; recognizes the mystery as profound, then adds, 'But we're working on it. '
Blake did not love science, even feared and despised it:
For Bacon and Newton, sheath'd in dismal steel, their terrors hang Like iron scourges over Albion; Reasonings like vast Serpents Infold around my limbs . . .
'Bacon, Newton, and Locke, Jerusalem (1804-20)
What a waste of poetic talent. And if, as fashionable commentators can be relied upon to insist, a political motive underlay his poem, it is still a waste; for politics and its preoccupations are so temporary, so trifling by comparison. It is my thesis that poets could better use the inspiration provided by science and that at the same time scientists must reach out to the constituency that I am identifying with, for want of a better word, poets.
It is not, of course, that science should be declaimed in verse. The rhyming couplets of Erasmus Darwin, Charles's grandfather, though surprisingly well regarded in their time, do not enhance the science. Nor, unless scientists happen to have the talents of a Carl Sagan, a Peter Atkins or a Loren Eiseley, should they cultivate a deliberately prose- poetic style in their expositions. Simple, sober clarity will do nicely, letting the facts and the ideas speak for themselves. The poetry is in the science.
Poets can be obscure, sometimes for good reason, and they rightly claim immunity from the obligation to explain their lines. 'Tell me Mr Eliot, how exactly does one measure out one's life with coffee spoons? ' would not, to say the least, have been a good conversation opener, but a scientist, rightly, expects to be asked equivalent questions. 'In what sense can a gene be selfish? ' 'What exactly flows down the River Out of Eden? ' I still spell out on demand the meaning of Mount Improbable and how slowly and gradually it is climbed. Our language must strive to enlighten and explain, and if we fail to convey our meaning by one approach we should go to work on another. But, without losing lucidity, indeed with added lucidity, we need to reclaim for real science that style of awed wonder that moved mystics like Blake. Real science has a just entitlement to the tingle in the spine which, at a lower level, attracts the fans of Star Trek
and Doctor Who and which, at the lowest level of all, has been lucratively hijacked by astrologers, clairvoyants and television psychics.
Hijacking by pseudo-scientists is not the only threat to our sense of wonder. Populist 'dumbing down' is another, and I shall return to it. A third is hostility from academics sophisticated in fashionable disciplines. A voguish fad sees science as only one of many cultural myths, no more true nor valid than the myths of any other culture. In the United States it is fed by justified guilt over the historical treatment of Native Americans. But the consequences can be laughable; as in the case of Kennewick Man.
Kennewick Man is a skeleton discovered in Washington State in 1996, carbon-dated to older than 9000 years. Anthropologists were intrigued by anatomical suggestions that he might be unrelated to typical Native Americans, and therefore might represent a separate early migration across what is now the Bering Strait, or even from Iceland. They were preparing to do all-important DNA tests when the legal authorities seized the skeleton, intending to hand it over to representatives of local Indian tribes, who proposed to bury it and forbid all further study. Naturally there was widespread opposition from the scientific and archaeological community. Even if Kennewick Man is an American Indian of some kind, it is highly unlikely that his affinities lie with whichever particular tribe happens to live in the same area 9,000 years later.
Native Americans have impressive legal muscle, and 'The Ancient One' might have been handed over to the tribes, but for a bizarre twist. The Asatru Folk Assembly, a group of worshippers of the Norse gods Thor and Odin, filed an independent legal claim that Kennewick Man was actually a Viking. This Nordic sect, whose views you may follow in the Summer 1997 issue of The Runestone, were actually allowed to hold a religious service over the bones. This upset the Yakama Indian community, whose spokesman feared that the Viking ceremony could be 'keeping Kennewick Man's spirit from finding his body. The dispute between Indians and Norsemen could well be settled by DNA comparison, and the Norsemen are quite keen to be put to this test. Scientific study of the remains would certainly cast fascinating light on the question of when humans first arrived in America. But Indian leaders resent the very idea of studying this question, because they believe their ancestors have been in America since the creation. As Armand Minthorn, religious leader of the Umatilla tribe, put it; 'From our oral histories, we know that our people have been part of this land since the beginning of time. We do not believe our people migrated here from another continent, as the scientists do. '
Perhaps the best policy for the archaeologists would be to declare themselves a religion, with DNA fingerprints their sacramental totem. Facetious but, such is the climate in the United States at the end of the twentieth century, it is possibly the only recourse that would work. If you say, 'Look, here is overwhelming evidence from carbon dating, from mitochondrial DNA, and from archaeological analyses of pottery, that X is the case' you will get nowhere. But if you say, 'It is a fundamental and unquestioned belief of my culture that X is the case' you will immediately hold a judge's attention.
It will also hold the attention of many in the academic community who, in the late twentieth century, have discovered a new form of anti- scientific rhetoric, sometimes called the 'post-modem critique' of science. The most thorough whistle-blowing on this kind of thing is Paul Gross and Norman Levitt's splendid book Higher Superstition: The Academic Left and its Quarrels with Science (1994). The American anthropologist Matt Cartmill sums up the basic credo:
Anybody who claims to have objective knowledge about anything is trying to control and dominate the rest of us. . . There are no objective facts. All supposed facts' are contaminated with theories, and all theories are infested with moral and political doctrines . . . Therefore, when some guy in a lab coat tells you that such and such is an objective fact . . . he must have a political agenda up his starched white sleeve. 'Oppressed by evolution'. Discover magazine (1998)
There are even a few vocal fifth columnists within science itself who hold exactly these views, and use them to waste the time of the rest of us.
Cartmill's thesis is that there is an unexpected and pernicious alliance between the know-nothing fundamentalist religious right and the sophisticated academic left. A bizarre manifestation of the alliance is their joint opposition to the theory of evolution. The opposition of the fundamentalists is obvious. That of the left is a compound of hostility to science in general, of 'respect' (weasel word of our time) for tribal creation myths, and of various political agendas. Both these strange bedfellows share a concern for 'human dignity' and take offence at treating humans as 'animals'. Barbara Ehrenreich and Janet Mcintosh make a similar point about what they call 'secular creationists' in their 1997 article 'The New Creationism' in The Nation magazine.
Purveyors of cultural relativism and the 'higher superstition' are apt to pour scorn on the search for truth. This partly stems from the conviction that truths are different in different cultures (that was the point of the Kennewick Man story) and partly from the inability of philosophers of science to agree about truth anyway. There are, of course, genuine
philosophical difficulties. Is a truth just a so-far-unfalsified hypothesis? What status does truth have in the strange, uncertain world of quantum theory? Is anything ultimately true? On the other hand, no philosopher has any trouble using the language of truth when falsely accused of a crime, or when suspecting his wife of adultery. 'Is it true? ' feels like a fair question, and few who ask it in their private lives would be satisfied with logic-chopping sophistry in response. Quantum thought experimenters may not know in what sense it is 'true' that Schrodinger's cat is dead. But everybody knows what is true about the statement that my childhood cat Jane is dead. And there are lots of scientific truths where what we claim is only that they are true in the same everyday sense.
If I tell you that humans and chimpanzees share a common ancestor, you may doubt the truth of my statement and search (in vain) for evidence that it is false. But we both know what it would mean for it to be true, and what it would mean for it to be false. It is in the same category as 'Is it true that you were in Oxford on the night of the crime? ', not in the same difficult category as 'Is it true that a quantum has position? ' Yes, there are philosophical difficulties about truth, but we can get a long way before we have to worry about them. Premature erection of alleged philosophical problems is sometimes a smokescreen for mischief.
'Dumbing down' is a very different kind of threat to scientific sensibility. The 'Public Understanding of Science' movement, provoked in America by the Soviet Union's triumphant entry into the space race and driven today, at least in Britain, by public alarm over a decline in applications for science places at universities, is going demotic. 'Science Weeks' and 'Science Fortnights' betray an anxiety among scientists to be loved.
Funny hats and larky voices proclaim that science is fun, fun, fun. Whacky 'personalities' perform explosions and funky tricks. I recently attended a briefing session where scientists were urged to put on events in shopping malls designed to lure people into the joys of science. The speedier advised us to do nothing that might conceivably be seen as a turn-off. Always make your science 'relevant' to ordinary people's lives, to what goes on in their own kitchen or bathroom. Where possible, choose experimental materials that your audience can eat at the end. At the last event organized by the speaker himself, the scientific phenomenon that really grabbed attention was the urinal that automatically flushed as you stepped away. The very word science is best avoided, we were told, because 'ordinary people' see it as threatening.
I have little doubt that such dumbing down will be successful if our aim is to maximize the total population count at our 'event'. But when I protest that what is being marketed here is not real science, I am rebuked for my 'elitism' and told that luring people in, by any means, is a necessary first step. Well, if we must use the word (I wouldn't), maybe
elitism is not such a terrible thing. And there is a great difference between an exclusive snobbery and an embracing, flattering elitism that strives to help people to raise their game and join the elite. A calculated dumbing down is the worst: condescending and patronizing. When I gave these views in a recent lecture in America, a questioner at the end, no doubt with a glow of political self-congratulation in his white male heart, had the insulting impertinence to suggest that dumbing down might be necessary to bring 'minorities and women' to science.
I worry that to promote science as all fun and larky and easy is to store up trouble for the future. Real science can be hard (well, challenging, to give it a more positive spin) but, like classical literature or playing the violin, worth the struggle. If children are lured into science, or any other worthwhile occupation, by the promise of easy fun, what are they going to do when they finally have to confront the reality? Recruiting advertisements for the army rightly don't promise a picnic: they seek young people dedicated enough to stand the pace. 'Fun' sends the wrong signals and might attract people to science for the wrong reasons. Literary scholarship is in danger of becoming similarly undermined. Idle students are seduced into a debased 'Cultural Studies', on the promise that they will spend their time deconstructing soap operas, tabloid princesses and Tellytubbies. Science, like proper literary studies, can be hard and challenging but science is - also like proper literary studies - wonderful. Science can pay its way but, like great art, it shouldn't have to. And we shouldn't need whacky personalities and fun explosions to persuade us of the value of a life spent finding out why we have life in the first place.
I fear that I may have been too negative in this attack, but there are times when a pendulum has swung far enough and needs a strong push in the other direction to restore equilibrium. Of course science is fun, in the sense that it is the very opposite of boring. It can enthral a good mind for a lifetime. Certainly, practical demonstrations can help to make ideas vivid and lasting in the mind. From Michael Faraday's Royal Institution Christmas Lectures to Richard Gregory's Bristol Exploratory, children have been excited by hands-on experience of true science. I have myself been honoured to give the Christmas Lectures, in their modern televised form, and I depended upon plenty of hands-on demonstrations. Faraday never dumbed down. I am attacking only the kind of populist whoring that defiles the wonder of science.
Annually there is a large dinner in London at which prizes for the year's best popular science books are awarded. One prize is for children's books on science, and it was recently won by a book about insects and other 'horrible ugly bugs'. That kind of language is perhaps not best calculated to arouse the poetic sense of wonder, but let us be tolerant and
acknowledge other ways of attracting the interest of children. Harder to forgive were the antics of the chairman of the judges, a well-known television personality (who had recently sold out to the lucrative genre of 'paranormal' television). Squeaking with game-show levity, she incited
the large audience (of adults) to join her in repeated choruses of audible grimaces at the contemplation of the horrible 'ugly bugs'. 'Eeeu-urrrgh! Yuck! Yeeyuck! Eeeeeuurrrgh! ' That kind of vulgar fun demeans the wonder of science, and risks 'turning off' the very people best qualified to appreciate it and inspire others: real poets and true scholars of literature.
By poets, of course, I intend artists of all kinds. Michelangelo and Bach were paid to celebrate the sacred themes of their times and the results will always strike human senses as sublime. But we shall never know how such genius might have responded to alternative commissions. As Michelangelo's mind moved upon silence 'Like a long-legged fly upon the stream', what might he not have painted if he had known the contents of one nerve cell from a long-legged fly? Think of the 'Dies Irae' that might have been wrung from Verdi by the contemplation of the dinosaurs' fate when, 65 million years ago, a mountain-sized rock screamed out of deep space at 10,000 miles per hour straight at the Yucatan peninsula and the world went dark. Try to imagine Beethoven's 'Evolution Symphony, Haydn's oratorio on 'The Expanding Universe', or Milton's epic The Milky Way. As for Shakespeare . . . But we don't have to aim so high. Lesser poets would be a fine start.
I can imagine, in some otherworld
Primeval-dumb, far back
In that most awful stillness, that only gasped and hummed. Humming-birds raced down the avenues.
Before anything had a soul.
While life was a heave of matter, half inanimate.
This little bit chipped off in brilliance
And went whizzing through the slow, vast, succulent stems.
I believe there were no flowers then.
In the world where the humming-bird flashed ahead of creation.
I believe he pierced the slow vegetable veins with his long beak. Probably he was big
As mosses, and little lizards, they say, were once big.
Probably he was a jabbing, terrifying monster.
We look at him through the wrong end of the telescope of Time, Luckily for us. Unrhyming Poems, 1928
D. H. Lawrence's poem about hummingbirds is almost wholly inaccurate and therefore, superficially, unscientific. Yet, in spite of this, it is a passable shot at how a poet might take inspiration from geological time. Lawrence lacked only a couple of tutorials in evolution and taxonomy to
bring his poem within the pale of accuracy, and it would be no less arresting and thought-provoking as a poem. After another tutorial Lawrence, the miner's son, might have turned fresh eyes on his coal fire, whose glowing energy last saw the light of day - was the light of day - when it warmed the Carboniferous tree ferns, to be laid down in earth's dark cellar and sealed for three million centuries. A larger obstacle would have been Lawrence's hostility to what he wrongly thought of as the anti- poetic spirit of science and scientists, as when he grumbled that
Knowledge has killed the sun, making it a ball of gas with spots . . . The world of reason and science . . . this is the dry and sterile world the abstracted mind inhabits.
I am almost reluctant to admit that my favourite of all poets is that confused Irish mystic William Butler Yeats. In old age Yeats sought a theme and sought for it in vain, finally returning, in desperation, to enumerate old themes of his young manhood. How sad to give up, wrecked among heathen dreams, marooned amid the faeries and fey Irishry of his affected youth when, an hour's drive from Yeats's tower, Ireland housed the largest astronomical telescope then built. This was the 72-inch reflector, built before Yeats was born by William Parsons, third earl of Rosse, at Birr Castle (where it has now been restored by the seventh earl). What might a single glance at the Milky Way through the eyepiece of the 'Leviathan of Parsonstown' not have done for the frustrated poet who, as a young man, had written these unforgettable lines?
Be you still, be you still, trembling heart; Remember the wisdom out of the old days:
Him who trembles before the flame and the flood, And the winds that blow through the starry ways, Let the starry winds and the flame and the flood Cover over and hide, for he has no part
With the lonely, majestical multitude.
from The Wind Among the Reeds (1899)
Those would make fine last words for a scientist, as would, now that I think about it, the poet's own epitaph, 'Cast a cold eye/On life, on death. / Horseman, pass by! '
But, like Blake, Yeats was no lover of science, dismissing it (absurdly), as the 'opium of the suburbs', and calling us to 'Move upon Newton's town. ' That is sad, and the kind of thing that drives me to write my books.
Keats, too, complained that Newton had destroyed the poetry of the rainbow by explaining it. By more general implication, science is poetry's
killjoy, dry and cold, cheerless, overbearing and lacking in everything that a young Romantic might desire. To proclaim the opposite is one purpose of this book, and I shall here limit myself to the untestable speculation that Keats, like Yeats, might have been an even better poet if he had gone to science for some of his inspiration.
It has been pointed out that Keats's medical education may have equipped him to recognize the mortal symptoms of his own tuberculosis, as when he ominously diagnosed his own arterial blood. Science, for him, would not have been the bringer of good news, so it is less wonder if he found solace in an antiseptic world of classical myth, losing himself among panpipes and naiads, nymphs and dryads, just as Yeats was to do among their Celtic counterparts. Irresistible as I find both poets, forgive my wondering whether the Greeks would have recognized their legends in Keats, or the Celts theirs in Yeats. Were these great poets as well served as they could have been by their sources of inspiration? Did prejudice against reason weigh down the wings of poesy?
It is my thesis that the spirit of wonder which led Blake to Christian mysticism, Keats to Arcadian myth and Yeats to Fenians and fairies, is the very same spirit that moves great scientists; a spirit which, if fed back to poets in scientific guise, might inspire still greater poetry. In support, I adduce the less elevated genre of science fiction. Jules Verne, H. G. Wells, Olaf Stapledon, Robert Heinlein, Isaac Asimov, Arthur C. Clarke, Ray Bradbury and others have used prose-poetry to evoke the romance of scientific themes, in some cases explicitly linking them to the myths of antiquity. The best of science fiction seems to me an important literary form in its own right, snobbishly underrated by some scholars of literature. More than one reputable scientist has been introduced to what I am calling the spirit of wonder through an early fascination with science fiction.
At the lower end of the science fiction market the same spirit has been abused for more sinister ends, but the bridge to mystical and romantic poetry can still be discerned. At least one major religion, Scientology, was founded by a science fiction writer, L. Ron Hubbard (whose entry in the Oxford Dictionary of Quotations reads, 'If you really want to make a million . . . the quickest way is to start your own religion'). The now dead adherents of the cult of 'Heaven's Gate' probably never knew that the phrase appears twice in Shakespeare and twice in Keats, but they knew all about Star Trek and were obsessed with it. The language of their website is a preposterous caricature of misunderstood science, laced with bad romantic poetry.
The cult of The X-Files has been defended as harmless because it is, after all, only fiction. On the face of it, that is a fair defence. But regularly
recurring fiction - soap operas, cop series find the like - are legitimately criticized if, week after week, they systematically present a one-sided view of the world. The X-Files is a television series in which, every week, two FBI agents face a mystery. One of the two, Scully, favours a rational, scientific explanation; the other agent, Mulder, goes for an explanation which either is supernatural or, at very least, glorifies the inexplicable. The problem with The X-Files is that routinely, relentlessly, the supernatural explanation, or at least the Mulder end of the spectrum, usually turns out to be the answer. I'm told that, in recent episodes, even the sceptical agent Scully is starting to have her confidence shaken, and no wonder. But isn't it just harmless fiction, then? No, I think the defence rings hollow. Imagine a television series in which two police officers solve a crime each week. Every week there is one black suspect and one white suspect. One of the two detectives is always biased towards the black suspect, the other biased towards the white. And, week after week, the black suspect turns out to have done it. So, what's wrong with that? After all, it's only fiction! Shocking as it is, I believe the analogy to be a completely fair one. I am not saying that supernaturalist propaganda is as dangerous or unpleasant as racist propaganda. But The X-Files systematically purveys an anti-rational view of the world which, by virtue of its recurrent persistence, is insidious.
Another bastard form of science fiction converges upon Tolkienian faked- up myth. Physicists rub shoulders with wizards, interplanetary aliens escort princesses sidesaddle on unicorns, thousand-port-holed space stations loom out of the same mist as medieval castles with ravens (or even pterodactyls) wheeling around their gothic turrets. True, or calculatedly modified, science is replaced by magic, which is the easy way out.
Good science fiction has no dealings with fairytale magic spells, but is premised on the world as an orderly place. There is mystery, but the universe is not frivolous nor light-fingered in its changeability. If you put a brick on a table it stays there unless something moves it, even if you have forgotten it is there. Poltergeists and sprites don't intervene and
hurl it about for reasons of mischief or caprice. Science fiction may
tinker with the laws of nature, advisedly and preferably one law at a time, but it cannot abolish lawfulness itself and remain good science fiction. Fictional computers may become consciously malevolent or even, in Douglas Adams's masterly science comedies, paranoid; spaceships may warp-drive themselves to distant galaxies using some postulated future technology, but the decencies of science are essentially maintained. Science allows mystery but not magic, strangeness beyond wild
imagining but no spells or witchery, no cheap and easy miracles. Bad science fiction loses its grip on moderated lawfulness and substitutes the 'anything goes' profligacy of magic. The worst of bad science fiction joins
hands with the 'paranormal', that other lazy, misbegotten child of the sense of wonder which ought to be motivating true science. The popularity of this kind of pseudo-science at least seems to suggest that the sense of wonder is widespread and heartfelt, however misapplied it may be. Here lies the only consolation I can find in the pre-millennial media obsession with the paranormal; with the immensely successful X- Files and with popular television shows in which routine conjuring tricks are misrepresented as violating natural law.
But let us return to Auden's pleasing compliment and our inversion of it. Why do some scientists feel like shabby curates among literary dukes, and why do many in our society perceive them so?
Undergraduates specializing in science at my own university have occasionally remarked to me (wistfully, for peer pressure in their cohort is strong) that their subject is not seen as 'cool'. This was illustrated for me by a smart young journalist whom I met on a recent BBC television discussion series. She seemed almost intrigued to meet a scientist, for she confided that when at Oxford she had never known any. Her circle had regarded them from a distance as 'grey men', especially pitying their habit of getting out of bed before lunch. Of all absurd excesses, they attended 9 a. m. lectures and then worked through the morning in the labs. That great humanist and humanitarian statesman Jawaharlal Nehru, as befits the first prime minister of a country that cannot afford to mess about, had a more realistic view of science.
It is science alone that can solve the problems of hunger and poverty, of insanitation and illiteracy, of superstition and deadening custom and tradition, of vast resources running to waste, or a rich country inhabited by starving people . . . Who indeed could afford to ignore science today? At every turn we have to seek its aid . . . The future belongs to science and those who make friends with science*.
(1962)
Nevertheless, the confidence with which scientists sometimes state how much we know and how useful science can be, may spill over into arrogance. The distinguished embryologist Lewis Wolpert once admitted that science is occasionally arrogant, and he went on to remark, mildly, that science has a certain amount to be arrogant about. Peter Medawar, Carl Sagan and Peter Atkins have all said something similar.
* Correcting copy in August 1998, I cannot let this pass without sadly reflecting that Nehru would feel India's decision to carry out nuclear tests, unilaterally and in defiance of world opinion, to be a shocking abuse of science and a desecration of his memory and that of Mahatma Gandhi.
Arrogant or not, we at least pay lip-service to the idea that science advances by disproof of its hypotheses. Konrad Lorenz, father of ethology, characteristically exaggerated when he said he looked forward to disproving at least one pet hypothesis daily, before breakfast. But it is true that scientists, more than, say, lawyers, doctors or politicians, gain prestige among their peers by publicly admitting their mistakes. One of the formative experiences of my Oxford undergraduate years occurred when a visiting lecturer from America presented evidence that conclusively disproved the pet theory of a deeply respected elder statesman of our zoology department, the theory that we had all been brought up on. At the end of the lecture, the old man rose, strode to the front of the hall, shook the American warmly by the hand and declared,
in ringing emotional tones, 'My dear fellow, I wish to thank you. I have been wrong these fifteen years. ' We clapped our hands red. Is any other profession so generous towards its admitted mistakes?
Science progresses by correcting its mistakes, and makes no secret of what it still does not understand. Yet the opposite is widely perceived. Bernard Levin, when a columnist on The Times of London, sporadically published tirades against science, and on 11 October 1996 he wrote one headed 'God, me and Dr Dawkins', with the subtitle 'Scientists don't know and nor do I - but at least I know I don't know', above which was a cartoon of me as Michelangelo's Adam encountering the pointing finger of God. But as any scientist would vigorously protest, it is of the essence of science to know what we do not know. This is precisely what drives us to find out. In an earlier column, of 29 July 1994, Bernard Levin had made light of the idea of quarks ('The quarks are coming! The quarks are coming! Run for your lives . . . '). After further cracks about 'noble science' having given us mobile telephones, collapsible umbrellas and multi- striped toothpaste, he broke into mock seriousness:
Can you eat quarks? Can you spread them on your bed when the cold weather comes?
This sort of thing doesn't really deserve a reply, but the Cambridge metallurgist Sir Alan Cottrell gave it two sentences, in a Letter to the Editor a few days later.
Sir: Mr Bernard Levin asks 'Can you eat quarks? ' I estimate that he eats 500, 000,000, 000,000, 000,000, 000,001 quarks a day . . . Yours faithfully.
