“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 is a second self.”

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

“For though we love both the truth and our friends, piety requires us to honor the truth first.”

“Dignity does not consist in possessing honors, but in the consciousness that we deserve them.”

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

“He is his own best friend and takes delight in privacy whereas the man of no virtue or ability is his own worst enemy and is afraid of solitude.”