The Republic by Plato Part 2 Page 71

not. For a young person cannot judge what is allegorical and what is literal; anything that he receives into his mind at that age is likely to become indelible and unalterable; and therefore it is most important that the tales which the young first hear should be models of virtuous thoughts.

There you are right, he replied; but if any one asks where are such models to be found and of what tales are you speaking — how shall we answer him?

I said to him, You and I, Adeimantus, at this moment are not poets, but founders of a State: now the founders of a State ought to know the general forms in which poets should cast their tales, and the limits which must be observed by them, but to make the tales is not their business.

Very true, he said; but what