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

"Don't ever do anything that you don't want to explain to a student."

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

"Science is a way of thinking much more than it is a body of knowledge."

"Physics is like sex: sure, it may give some practical results, but that's not why we do it."