"It is in the knowledge of the genuine conditions of our existence that we must draw our strength to live and our reasons for acting."

"To be authentic, one must be true to oneself."

"If you want to be happy, you must be free."

"I tore myself away from the safe comfort of certainties through my love for truth - and truth was undoubtedly the highest mistress I ever served."

"Man is a creature of flesh and bone, but also of ideas and dreams."