"We don't stop playing because we grow old; we grow old because we stop playing."

"The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself."

"Old men are dangerous: it doesn't matter to them what is going to happen to the world."

"A man of great common sense and good taste - meaning thereby a man without originality or moral courage."

"To abandon oneself to principles is really to die - and to die for an impossible love which is the contrary of love."

"Every creature is better alive than dead, men and moose and pine trees, and he who understands it aright will rather preserve its life than destroy it."

"In the long run, we shape our lives, and we shape ourselves. The process never ends until we die. And the choices we make are ultimately our own responsibility."

"The Greeks said grandly in their tragic phrase, 'Let no one be called happy till his death' to which I would add, 'Let no one, till his death, be called unhappy.'"