"The advantage of the emotions is that they lead us astray, and the advantage of science is that it is not emotional."

"I am not at all sure that I am a popular person. But I am certainly a person who attracts a great deal of attention."

"I like Americans. They are bright, amusing, and can be taught anything. Except the art of taking a joke, perhaps."

"Experience is simply the name we give our mistakes."

"I put all my genius into my life; I put only my talent into my works."