"Don't let your happiness depend on something you may lose."

"Friendship is born at the moment when one man says to another "What! You too? I thought that no one but myself."

"Crying is all right in its way while it lasts. But you have to stop sooner or later, and then you still have to decide what to do."

"Don't judge a man by where he is, because you don't know how far he has come."

"Education without values, as useful as it is, seems rather to make man a more clever devil."

"Friendship is unnecessary, like philosophy, like art. It has no survival value; rather it is one of those things which give value to survival."