"When you wake up in the morning, tell yourself: The people I deal with today will be meddling, ungrateful, arrogant, dishonest, jealous, and surly."

"Thou wilt soon die, and thou art not yet simple, nor free from perturbations, nor without suspicion of harm from external things, nor an affectionate friend to wisdom, nor without suspicion that any e…"

"When you are offended at any man's fault, turn to yourself and study your own failings. Then you will forget your anger."

"If it is not right, do not do it; if it is not true, do not say it."

"To expect that your friends will not be false is foolish."