I am going to tell you what nature behaves like. If you will simply admit that maybe she does behave like this, you will find her a delightful, entrancing thing. Do not keep saying to yourself, if you can possibly avoid it, 'But how can it be like that?' ...Nobody knows how it can be like that.

I couldn't claim that I was smarter than sixty-five other guys--but the average of sixty-five other guys, certainly!

The present situation in physics is as if we know chess, but we don't know one or two rules.

I don't have to be good because they think I'm going to be good.

Scientists are explorers. Philosophers are tourists.

I learned a lot of different things from different schools. MIT is a very good place…. It has developed for itself a spirit, so that every member of the whole place thinks that it’s the most wonderful place in the world—it’s the center, somehow, of scientific and technological development in the United States, if not the world … and while you don’t get a good sense of proportion there, you do get an excellent sense of being with it and in it, and having motivation and desire to keep on

We have found it of paramount importance that in order to progress, we must recognize our ignorance and leave room for doubt.