"I'm not a serious person. I'm just a serious scientist."

"By the way, Professor, you know that paper in which you say those quantities are analogous... Did you know they're proportional?"

"I don't believe in the idea of a 'good' or 'bad' atom. I just believe in atoms."

"I'm a great believer in the idea that if you don't understand something, you should try to explain it to someone else."

"I don't need a theory, I just want to know what the hell is going on."