"I have long believed that an experimentalist should not be unduely inhibited by theoretical untidyness. If he insists in having every last theoretical T crossed before he starts his research the chances are that he will never do a significant experiment. And the more significant and fundamental the experiment the more theoretical uncertainty may be tolerated. By contrast, the more important and difficult the experiment the more that experimental care is warranted. There is no point in attempting a half-hearted experiment with an inadequate apparatus."

"I don't mean go out and get violent; but at the same time you should never be nonviolent unless you run into some nonviolence. I'm nonviolent with those who are nonviolent with me. But when you drop t…"

"I'm really happy when I meet a beautiful girl with whom I can have a good conversation. And I can feel attracted to her after a while, but that's not love! It takes time to develop an intense feeling …"

"The quantum revolution showed us why the old picture of a vacuum as an empty box was untenable. ...Gradually, this exotic new picture of quantum nothingness succumbed to experimental exploration... in…"

"One can go on endlessly reading, discussing, piling up words upon words, without ever doing anything about it. It is like a man that is always ploughing, never sowing, and therefore never reaping. Mos…"