You have power over your mind – not outside events. Realize this, and you will find strength.

Marcus Aurelius wrote these words to himself as a reminder of Stoic discipline and self-governance. The emperor faced war, loss, and political pressure, yet his reflections center on one simple truth: peace comes from within. The world will always bring uncertainty and difficulty, but your mind — your judgments, reactions, and choices — remain your own domain.

This passage encapsulates the Stoic idea of the dichotomy of control: some things are up to us, and others are not. Strength, in this view, is not about dominating circumstances but mastering perception. The more you anchor yourself in what you can control, the less power the uncontrollable has over you.