"My own estimate is that all of the people in the United States would be killed in a nuclear war, if we do not build fallout shelters, and that if we do build them and train the American people, all of…"

"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."

"The most important thing in life is to be happy."

"I like people. I like animals, too—whales and quail, dinosaurs and dodos. But I like human beings especially, and I am unhappy that the pool of human germ plasm, which determines the nature of the hum…"

"I think that the future of medicine is in prevention, not in treatment."