No More Learning

His           of the cave is the
classical statement of belief in a knowledge and reality truer and
more real than that of the senses:

"Imagine[2] a number of men living in an underground cavernous
chamber, with an entrance open to the light, extending along the
entire length of the cavern, in which they have been confined, from
their childhood, with their legs and necks so shackled that they
are obliged to sit still and look straight forwards, because their
chains render it impossible for them to turn their heads round: and
imagine a bright fire burning some way off, above and behind them,
and an elevated roadway passing between the fire and the prisoners,
with a low wall built along it, like the screens which conjurors
put up in front of their audience, and above which they exhibit
their wonders.