The Republic by Plato Part 10 Page 49

If, then, we find any nature which having this inherent corruption cannot be dissolved or destroyed, we may be certain that of such a nature there is no destruction?

That may be assumed.

Well, I said, and is there no evil which corrupts the soul?

Yes, he said, there are all the evils which we were just now passing in review: unrighteousness, intemperance, cowardice, ignorance.

But does any of these dissolve or destroy her? — and here do not let us fall into the error of supposing that the unjust and foolish man, when he is detected, perishes through his own injustice, which is an evil of the soul. Take the analogy of the body: The evil of the body is a disease which wastes and reduces and annihilates the body; and