Why are we so anxious about all sorts of things? “When I see a man in a state of anxiety, I say, ‘What can this man want? If he did not want something which is not in his power, how could he still be anxious? It is for this reason that one who sings to the lyre is not anxious when he is performing by himself, but when he enters the theatre, even if he has a very good voice and plays well: for he not only wants to perform well, but also to win a great name, and that is beyond his own control.’”