"Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution."

"I am almost ashamed to be living in such peace while all the rest struggle and suffer."

"If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut."

"The greatest scientists are artists as well."

"I am a deeply religious nonbeliever. This is a somewhat new kind of religion."