Miserable man, tell the truth and be not a braggart nor claim to be a philosopher. Know who are your masters. As long as you give them this hold over your body, you must follow every one who is stronger than you.
But Socrates, who spoke to the Tyrants, to his judges, and in prison, in the tone we know, had studied speaking to some purpose. So had Diogenes, who spoke in the same tone to Alexander, to Philip, to the pirates, to his purchaser. . . . Leave this to those who have made it their concern, to the confident: and do you go to your own concerns and never leave them again. Go and sit in your corner and weave syllogisms and propound them to others,
No ruler of a state is found in you.
Source: The Discourses of Epictetus, tr. by P.E Matheson,