This is the road that leads to liberty, the only road that delivers us from slavery: finally to be able to say, with meaning: Lead me, Zeus, lead me,… - Epictetus

Of all existing things some are in our power, and others are not in our power. In our power are thought, impulse, will to get and will to avoid, and, in a word, everything which is our own doing. Things not in our power include the body, property, reputation, office, and, in a word, everything which is not our own doing. Things in our power are by nature free, unhindered, untrammelled; things not in our power are weak, servile, subject to hindrance, dependent on others.

O slavish man! will you not bear with your own brother, who has God for his Father, as being a son from the same stock, and of the same high descent? But if you chance to be placed in some superior station, will you presently set yourself up for a tyrant?

distinguish between your own and not your own, the things which are in your power and not in your power,