Nature gave us one tongue and two ears so we could hear twice as much as we speak.Epictetus
“Freedom is secured not by the fulfilling of one's desires, but by the removal of desire.”
Stoic philosopher · 50 – 135
Epictetus was a Greek-born slave in Rome who won his freedom and became one of the most influential Stoic teachers. His Discourses and the handbook known as the Enchiridion teach that freedom lies in mastering one's own judgments and desires.
More like this

Control thy passions lest they take vengeance on thee.Epictetus

Circumstances do not make the man, they only reveal him to himself.Epictetus
It is impossible for a man to learn what he thinks he already knows.Epictetus
One that desires to excel should endeavour in those things that are in themselves most excellent.Epictetus

It is not what happens to you, but how you react to it that matters.Epictetus

The greater the difficulty, the more glory in surmounting it.Epictetus

Whoever does not regard what he has as most ample wealth, is unhappy, though he be master of the world.Epictetus