"You may fetter my leg, but Zeus himself cannot get the better of my free will."

"Make the best use of what is in your power, and take the rest as it happens."

"If you wish to be good, know that you are bad."

"When you are about to say something, ask yourself, 'Is it true? Is it necessary? Is it kind?'"

"What would you rather have, a pig that grunts contentedly or a philosopher who complains?"