The master sold Callistus, but how much has Callistus made his master pay for! Kindly remember that he whom you call your slave sprang from the same stock, is smiled upon by the same skies, and on equal terms with yourself breathes, lives, and dies. It is just as possible for you to see in him a free-born man as for him to see in you a slave. As a result of the massacres in Marius’s day, many a man of distinguished birth, who was taking the first steps toward senatorial rank by service in the army, was humbled by fortune, one becoming a shepherd, another a caretaker of a country cottage. Despise, then, if you dare, those to whose estate you may at any time descend, even when you are despising them.
The quote: I do not wish to involve myself in too large a question, and to discuss the treatment of slaves, towards whom we Romans are excessively haughty, cruel, and insulting. But this is the kernel of my advice: Treat your inferiors as you would be treated by your betters.
And as often as you reflect how much power you have over a slave, remember that your master has just as much power over you. “But I have no master,” you say. You are still young; perhaps you will have one. Do you not know at what age Hecuba entered captivity, or Croesus, or the mother of Darius, or Plato, or Diogenes? Associate with your slave on kindly, even on affable, terms; let him talk with you, plan with you, live with you.