A quote
Sometimes an external happening reminds him of his mortality, but it is a light blow, and merely grazes the surface of his skin. Some trouble, I repeat, may touch him like a breath of wind, but that Supreme Good of his is unshaken. This is what I mean: there are external disadvantages, like pimples and boils that break out upon a body which is normally strong and sound; but there is no deep-seated malady.
Seneca·Letter 72 — On Business as the Enemy of Philosophy (§5)·trans. Gummere