"I consider myself a lucky man who did not have to choose between going to war and doing something else. I just did what I was doing."

"The atomic bomb is a testament to the power of human intellect, but it is also a warning about the dangers of human folly."

"The first principle of science is that you must not fool yourself—and you are the easiest person to fool."

"The purpose of science is to make sense of the world, not to explain it away."

"The true joy of discovery is not in finding something new, but in understanding something old."