"The reason why we have two ears and only one mouth is that we may listen the more and talk the less."

"The philosopher's school, ye men, is a surgery: you ought not to go out of it with pleasure, but with pain. For you are not in sound health when you enter."

"Seek not to have things happen as you wish, but wish things to happen as they do, and you will have peace."

"As a mark is not set up for the purpose of missing the aim, so neither does the nature of evil exist in the universe."

"If a man is unhappy, this must be due to his own fault, that he does not understand that it is in his power to be happy."