"The greatest good you can do for another is not just to share your riches but to reveal to him his own."

"It is a platitude that a man cannot be happy unless he is healthy."

"I am not interested in the universe as a mere collection of facts, but as a system of relations."

"If an opinion contrary to your own makes you angry, that is a sign that you are subconsciously aware of having no good reason for thinking as you do."

"The universe may have a purpose, but no detectable purpose."