The Republic by Plato Part 10 Page 36

for he indulges the irrational nature which has no discernment of greater and less, but thinks the same thing at one time great and at another small — he is a manufacturer of images and is very far removed from the truth.

Exactly.

But we have not yet brought forward the heaviest count in our accusation: — the power which poetry has of harming even the good (and there are very few who are not harmed), is surely an awful thing?

Yes, certainly, if the effect is what you say.

Hear and judge: The best of us, as I conceive, when we listen to a passage of Homer, or one of the tragedians, in which he represents some pitiful hero who is drawling out his sorrows in a long oration, or weeping, and smiting his breast —