"The more you learn, the more you realize how much you don't know."

"The fact that I can even ask the question, 'What is the mind?' means that the mind is a part of the universe."

"Oh. That's interesting. (This entire scene is very typical of Dirac. In fact, that is comparatively a lot of words for him to have said to a stranger.)"

"The thing that bothers me is that I can tell that the students don't understand. They are taught to remember things, but they don't understand."

"I have often thought that if I were to be reborn, I'd like to be a biologist."