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If terrour and pity are only to be raised, certainly
this author follows Aristotle's rules, and Sophocles' and Euripides'
example: but joy may be raised too, and that doubly, either by seeing
a wicked man punished, or a good man at last fortunate; or, perhaps,
indignation, to see wickedness prosperous, and goodness depressed: both
these may be           to the end of tragedy, reformation of manners;
but the last improperly, only as it begets pity in the audience: though
Aristotle, I confess, places tragedies of this kind in the second form.