Consider the soul in like manner. Does the injustice or other evil which exists in the soul waste and consume her? Do they by attaching to the soul and inhering in her at last bring her to death, and so separate her from the body?
Certainly not.
And yet, I said, it is unreasonable to suppose that anything can perish from without through affection of external evil which could not be destroyed from within by a corruption of its own?
It is, he replied.
Consider, I said, Glaucon, that even the badness of food, whether staleness, decomposition, or any other bad quality, when confined to the actual food, is not supposed to destroy the body; although, if the badness of food communicates corruption to the body, then we should say that the body has been destroyed by a corruption of itself, which is disease, brought on by this; but that the body, being one thing, can be destroyed by the badness of the food, which is another, and which does not engender any natural infection—this we shall absolutely deny?
Very true.
And, on the same principle, unless some bodily evil can produce an evil of the soul, we must not suppose that the soul, which is one thing, can be dissolved by any merely external evil which belongs to another?
Yes, he said, there is reason in that.
Either, then, let us refute this conclusion, or, while it remains unrefuted, let us never say that fever, or any other disease, or the knife put to the throat, or even the cutting up of the whole body into the minutest pieces, can destroy the soul, until she herself is proved to become more unholy or unrighteous in consequence of these things being done to the body; but that the soul, or anything else if not destroyed by an internal evil, can be destroyed by an external one, is not to be affirmed by any man.
And surely, he replied, no one will ever prove that the souls of men become more unjust in consequence of death.
But if someone who would rather not admit the immortality of the soul boldly denies this, and says that the dying do really become more evil and unrighteous, then, if the speaker is right,