Meditation 6.33-34

33. Neither pain of hand nor pain of foot is contrary to Nature, provided the foot is doing the service of a foot or the hand of a hand. It follows that not even for a man, as man, is pain contrary to Nature, while he is doing the service of a man, and if pain for him is not contrary to Nature, neither is it an evil for him.

34. What monstrous pleasures brigands, pathics, parricides, and despots enjoy.