"The things that make a man human are also the things that make him dangerous."

"We may be living in a world where the future is already written, but we still have the power to change it."

"In some sort of crude sense which no vulgarity, no humor, no overstatement can quite extinguish, the physicists have known sin; and this is a knowledge which they cannot lose."

"The atomic bomb is a weapon for aggressors, and the atomic bomb is a weapon of terror. It is not a defensive weapon. It is not a weapon of precision. It is a weapon for killing people. And its whole h…"

"In the spring of 1929, I returned to the United States. I was homesick for this country. I had learned in my student days a great deal about the new physics. I wanted to pursue this myself, to explain…"