The Stoics adopted the Socratic division of cardinal virtues into wisdom, justice, courage, and moderation. The other three virtues can be understood as wisdom applied to our actions in different areas of life. Justice is largely wisdom applied to the social sphere, our relationships with other people. Displaying courage and moderation involves mastering our fears and desires, respectively, overcoming what the Stoics called the unhealthy “passions” that otherwise interfere with our ability to live in accord with wisdom and justice.
