We will not have them trying to persuade our youth that the gods are the authors of evil, and that heroes are no better than men--sentiments which, as we were saying, are neither pious nor true, for we have already proved that evil cannot come from the gods.
Assuredly not.
And further they are likely to have a bad effect on those who hear them; for everybody will begin to excuse his own vices when he is convinced that similar wickednesses are always being perpetrated by-- 'The kindred of the gods, the relatives of Zeus, whose ancestral altar, the altar of Zeus, is aloft in air on the peak of Ida,' and who have 'the blood of deities yet flowing in their veins.' And therefore let us put an end to such tales, lest they engender laxity of morals among the young.
By all means, he replied.
But now that we are determining what classes of subjects are or are not to be spoken of, let us see whether any have been omitted by us.

The manner in which gods and demigods and heroes and the world below should be treated has been already laid down.
Very true.
And what shall we say about men?
That is clearly the remaining portion of our subject.
Clearly so.
But we are not in a condition to answer this question at present, my friend.
Why not?
Because, if I am not mistaken, we shall have to say that about men poets and story-tellers are guilty of making the gravest misstatements when they tell us that wicked men are often happy, and the good miserable; and that injustice is profitable when undetected, but that justice is a man's own loss and another's gain--these things we shall forbid them to utter, and command them to sing and say the opposite.
To be sure we shall, he replied.
But if you admit that I am right in this, then I shall maintain that you have implied the principle for which we have been all along contending.
I grant the truth of your inference.
That such things are or are not to be said about men is a question which we cannot determine until we have discovered what justice is, and how naturally advantageous to the possessor, whether he seem to be just or not.
Most true, he said.
Enough of the subjects of poetry: let us now speak of the style; and when this has been considered, both matter and manner will have been completely treated.
I do not understand what you mean, said Adeimantus.
Then I must make you understand; and perhaps I may be more intelligible if I put the matter in this way.

You are aware, I suppose, that all mythology and poetry is a narration of events, either past, present, or to come?
Certainly, he replied.
And narration may be either simple narration, or imitation, or a union of the two?
That again, he said, I do not quite understand.
I fear that I must be a ridiculous teacher when I have so much difficulty in making myself apprehended.

Like a bad speaker, therefore, I will not take the whole of the subject, but will break a piece off in illustration of my meaning.

You know the first lines of the Iliad, in which the poet says that Chryses prayed Agamemnon to release his daughter, and that Agamemnon flew into a passion with him; whereupon Chryses, failing of his object, invoked the anger of the God against the Achaeans.