Letters 28.8

Says one: “There were thirty tyrants surrounding Socrates, and yet they could not break his spirit”; but what does it matter how many masters a man has? “Slavery” has no plural; and he who has scorned it is free,—no matter amid how large a mob of over-lords he stands.

Seneca, Letters to Lucilius 28.8, translated by Richard Mott Gummere