Stoic Concept
Virtue
The sole good and the key to a flourishing life.
For the Stoics, Virtue is the only true good. External things like health, wealth, or reputation are considered 'indifferents.' A flourishing life (Eudaimonia) is achieved not by pursuing these externals, but by cultivating the four cardinal virtues: Wisdom (sophia), Justice (dikaiosyne), Courage (andreia), and Temperance (sophrosyne). It is the excellence of one's character that defines a good life.