“A friend is a second self.”

“A friend is a second self, so that our consciousness of a friend's existence...makes us more fully conscious of our own existence.”

“A friend to all is a friend to none.”

“We become just by the practice of just actions, self-controlled by exercising self-control, and courageous by performing acts of courage.”

“Happiness belongs to the self-sufficient.”

“We should behave to our friends as we would wish our friends behave to us”

“Freedom is obedience to self-formulated rules.”