"The great thing about science is that it is a way of life that teaches you that you are wrong."

"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…"

"The true scientist never loses the faculty of amusement. It is the essence of his being."

"The atomic bomb is a weapon which is new in many respects. It is a weapon of terror, a weapon for exterminating whole populations."

"The mind is not a vessel to be filled, but a fire to be kindled."