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

"We have to learn to live with the paradox of the atomic age: the power to destroy, and the power to create."

"My childhood did not prepare me for the fact that the world is full of cruel and bitter things."

"Genius sees the answer before the question."

"We have to learn to live with the knowledge that we have the power to destroy ourselves, but also the power to save ourselves."