EnchiridionEpictetus

The Enchiridion, compiled by Arrian from the teachings of Epictetus, is Stoic ethics compressed to its operational minimum. Where the Discourses develop arguments at length, the Enchiridion issues directives. Its opening sentence states the entire philosophy: "Some things are in our power and some are not."

Everything follows from this division. What is "ours" is judgment, impulse, desire, aversion: the operations of the mind. What is "not ours" is body, property, reputation, office: everything external. Freedom consists in wanting only what is in our power and accepting everything else as indifferent. The person who grasps this distinction cannot be compelled, frustrated, or harmed, because harm requires that something valuable be taken away, and the only valuable thing is the correct use of impressions.

The practical advice is severe. Do not say you have lost something; say you have returned it. Do not wish that events happen as you want; wish them to happen as they do. When you are insulted, remember that the insult has no power unless your judgment grants it power. Epictetus offers no comfort, only clarity. The reward for practicing these principles is not happiness in any warm sense but a kind of invulnerability, a settled orientation toward what actually depends on you. The Enchiridion became the most widely read Stoic text precisely because it delivers the whole doctrine in a form you can carry and apply.