Letter 92 (§22)

“Again, suppose that I set before you a man who is neither miserable nor happy. I add blindness to his misfortunes; he is not rendered unhappy. I cripple him; he is not rendered unhappy. I add afflictions which are unceasing and severe; he is not rendered unhappy. Therefore, one whose life is not changed to misery by all these ills is not dragged by them, either, from his life of happiness.”