Marcus Aurelius is the source behind the popular search phrase. In Meditations 5.20, he argues that when another person or event blocks one outward plan, the mind can still adapt and turn that hindrance into material for a different right action.
That is why the line matters in Stoicism: the obstacle is still real, but it no longer defines the whole situation. A delayed plan can become patience. A frustrating person can become an occasion for self-command. A hard season can become practice in distinguishing what you can govern from what you cannot.
Marcus is not saying obstacles are secretly good, and he is not preaching forced optimism. He is making a narrower claim: you cannot govern every event, but you can govern what kind of action the event draws out of you. The modern slogan often gets flattened into productivity advice, but in Marcus's own context it sits inside a discipline of limits, judgment, and moral responsibility.
a furtherance to an act. Read the passage.
Ask how Marcus Aurelius, Epictetus, and Seneca explain the idea—and how it applies to your situation.
No account required · iPhone & iPad