The Republic

Then everything which is good, whether made by art or nature, or both, is least liable to suffer change from without?

True.

But surely God and the things of God are in every way perfect?

Of course they are.

Then he can hardly be compelled by external influence to take many shapes?

He cannot.

But may he not change and transform himself?

Clearly, he said, that must be the case if he is changed at all.

And will he then change himself for the better and fairer, or for the worse and more unsightly?

If he change at all he can only change for the worse, for we cannot suppose him to be deficient either in virtue or beauty.

Very true, Adeimantus; but then, would any one, whether God or man, desire to make himself worse?

Impossible.

Then it is impossible that God should ever be willing to change; being, as is supposed, the fairest and best that is conceivable, every God remains absolutely and for ever in his own form.

That necessarily follows, he said, in my judgment.

Then, I said, my dear friend, let none of the poets tell us that

‘The gods, taking the disguise of strangers from other lands, walk up and down cities in all sorts of forms;’

and let no one slander Proteus and Thetis, neither let any one, either in tragedy or in any other kind of poetry, introduce Here disguised in the likeness of a priestess asking an alms

‘For the life-giving daughters of Inachus the river of Argos;’

—let us have no more lies of that sort. Neither must we have mothers under the influence of the poets scaring their children with a bad version of these myths—telling how certain gods, as they say, ‘Go about by night in the likeness of so many strangers and in divers forms;’ but let them take heed lest they make cowards of their children, and at the same time speak blasphemy against the gods.

Heaven forbid, he said.

But although the gods are themselves unchangeable, still by witchcraft and deception they may make us think that they appear in various forms?

Perhaps, he replied.

Well, but can you imagine that God will be willing to lie, whether in word or deed, or to put forth a phantom of himself?

I cannot say, he replied.

Do you not know, I said, that the true lie, if such an expression may be allowed, is hated of gods and men?

What do you mean? he said.

I mean that no one is willingly deceived in that which is the truest and highest part of himself, or about the truest and highest matters; there, above all, he is most afraid of a lie having possession of him.

Still, he said, I do not comprehend you.