"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

"The greatest tragedy of science is the slaying of a beautiful hypothesis by an ugly fact."

"We are like children playing on the seashore, and we have found a few smooth pebbles and pretty shells, while the great ocean of truth lies undiscovered before us."

"The universe is a strange and wonderful place, and we are only beginning to understand it."

"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."