"It is not possible that such a small difference in the atomic weights of hydrogen and helium could have such tremendous consequences."

"The fundamental problem is that the world is not simple. It is complex, and we are trying to understand it with simple ideas."

"The more you know, the more you realize you don't know."

"I have been very lucky in my life. I have always been able to do what I wanted to do, and I have always been able to do it with people I liked."

"The future of nuclear energy is not in bombs, but in power."