In all things there is an inherent corruption; and if this cannot destroy them, nothing else will.

The soul too has her own corrupting principles, which are injustice, intemperance, cowardice, and the like.

But none of these destroy the soul in the same sense that disease destroys the body.
The soul may be full of all iniquities, but is not, by reason of them, brought any nearer to death.

Nothing which was not destroyed from within ever perished by external affection of evil.

The body, which is one thing, cannot be destroyed by food, which is another, unless the badness of the food is communicated to the body.