September 04, 2026

What Good Requires

Nothing is more foolish than to think that good could exist without the existence of evil; since good and evil are contraries, both must necessarily exist, each sustained by the other.

Chrysippus of Soli led the Stoic school in the third century BC and was such a prolific systematizer that people said the Stoa would not have existed without him. This particular fragment survives because the Roman writer Aulus Gellius quoted it in his Attic Nights, while explaining how Stoics answered the old question of why evil exists at all. Chrysippus's argument is direct: good and evil are opposites, and one cannot exist without the other, so a life of pure ease could never produce real virtue. Stoics did not treat hardship as a flaw in an otherwise smooth plan for the world; they treated it as the necessary material virtue is built from. An obstacle, in this view, is not proof something has gone wrong, it is the raw condition patience, courage, and honesty need in order to exist.

A principle of Stoicism: The Obstacle Is the Way →