A quote
Every living thing exists as it began, until death; a man, until he dies, is a man, a horse is a horse, a dog a dog. They cannot change into anything else. Now let us grant that Justice—which is defined as “a soul in a certain attitude,” is a living thing. Let us suppose this to be so. Then Bravery also is alive, being “a soul in a certain attitude.” But which soul? That which was but now defined as Justice? The soul is kept within the first-named being, and cannot cross over into another; it must last out its existence in the medium where it had its origin.
Seneca·Letter 113 — On the Vitality of the Soul and Its Attributes (§11)·trans. Gummere