Change of Fortune Quotes in Poetics
The construction of the best tragedy should be complex rather than simple; and it should also be an imitation of events that evoke fear and pity, since that is the distinctive feature of this kind of imitation. So it is clear first of all that decent men should not be seen undergoing a change from good fortune to bad fortune—this does not evoke fear or pity, but disgust. Nor should depraved people be seen undergoing a change from bad fortune to good fortune—this is the least tragic of all: it has none of the right effects, since it neither agreeable, nor does it evoke pity or fear. Nor again should a very wicked person fall from good fortune to bad fortune—that kind of structure would be agreeable, but would not excite pity or fear, since the one has to do with someone who is suffering undeservedly, the other with someone who is like ourselves (I mean, pity has to do with the underserving sufferer, fear with the person like us); so what happens will evoke neither pity nor fear.
We are left, therefore, with the person intermediate between these. This is the sort of person who is not outstanding in moral excellence or justice; on the other hand, the change of bad fortune which he undergoes is not due to any moral defect or depravity, but to an error of some kind. He is one of those people who are held in great esteem and enjoy great good fortune, like Oedipus, Thyestes, and distinguished men from that kind of family.
Furthermore, if the objection is that something is not true, perhaps it is as it ought to be; e.g. Sophocles said that he portrayed people as they should be, Euripides as they are. That is the solution to use.