"Some things are in our control and others not. Things in our control are opinion, pursuit, desire, aversion, and, in a word, whatever are our own actions. Things not in our control are body, reputation, command, and, in one word, whatever are not our own actions."
— Enchiridion, 1
This is the dichotomy of control — the foundational distinction of Stoic philosophy. Everything else in the Stoic system flows from this distinction. And yet, despite its apparent simplicity, it is one of the most frequently misunderstood ideas in philosophy. This lesson examines it with the precision it deserves.