Plato: The Republic

10. BOOK X (continued)

Of the whole, certainly. But why do you ask?

Are you not aware, I said, that the soul of man is immortal and imperishable?

He looked at me in astonishment, and said: No, by heaven: And are you really prepared to maintain this?

Yes, I said, I ought to be, and you too--there is no difficulty in proving it.

I see a great difficulty; but I should like to hear you state this argument of which you make so light.

Listen then.

I am attending.

There is a thing which you call good and another which you call evil?

Yes, he replied.

Would you agree with me in thinking that the corrupting and destroying element is the evil, and the saving and improving element the good?

Yes.

And you admit that every thing has a good and also an evil; as ophthalmia is the evil of the eyes and disease of the whole body; as mildew is of corn, and rot of timber, or rust of copper and iron: in everything, or in almost everything, there is an inherent evil and disease?

Yes, he said.

And anything which is infected by any of these evils is made evil, and at last wholly dissolves and dies?

True.

The vice and evil which is inherent in each is the destruction of each; and if this does not destroy them there is nothing else that will; for good certainly will not destroy them, nor again, that which is neither good nor evil.

Certainly not.