"War is the greatest evil."

"I am a firm believer in the power of the human mind to solve problems."

"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…"

"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…"

"I think that the formation of [DNA's] structure by Watson and Crick may turn out to be the greatest developments in the field of molecular genetics in recent years."