"I'm told that the only difference between a mathematician and a physicist is that a mathematician thinks about mathematics and a physicist thinks about physics. And a physicist is always trying to get…"

"It is just as foolish to complain that people are selfish and treacherous as it is to complain that the magnetic field does not increase unless the electric field has a curl. Both are laws of nature."

"My own feeling is that the most important advances in the future will come from the interaction of mathematics with other sciences."

"If you say why not bomb them tomorrow, I say why not today? If you say today at five o'clock, I say why not one o'clock?"

"There's no sense in being precise when you don't even know what you're talking about."