"Physics is, hopefully, simple. Physicists are not."

"Had we not pursued the hydrogen bomb, there is a very real threat that we would now all be speaking Russian. I have no regrets."

"No endeavor that is worthwhile is simple in prospect; if it is right, it will be simple in retrospect."

"Life improves slowly and goes wrong fast, and only catastrophe is clearly visible."

"A fact is a simple statement that everyone believes. It is innocent, unless found guilty. A hypothesis is a novel suggestion that no one wants to believe. It is guilty, until found effective."

"The science of today is the technology of tomorrow."

"My experience has been in a short 77 years that in the end when you fight for a desperate cause and have good reasons to fight, you usually win."

"Secrecy, once accepted, becomes an addiction."

"I tried to contribute to the defeat of the Soviets. If I contributed 1%, it is 1% of something enormous."

"Two paradoxes are better than one; they may even suggest a solution."

"The main purpose of science is simplicity and as we understand more things, everything is becoming simpler."