"The only difference between a good idea and a bad idea is that a good idea works."

"Never put your trust into anything but your own intellect. Your elder, no matter whether he has gray hair or has lost his hair, no matter whether he is a Nobel laureate — may be wrong. The world progr…"

"Every time you go to the doctor, the doctor asks you to take off your clothes, and then he looks at you, and he tells you what's wrong with you. But he doesn't know anything about you."

"I have always liked working in some directions that people say, 'Well, that's ridiculous.'"

"I am convinced that we can abolish war, and that we must do so if we are to survive."