Modern psychology teaches that experience is not merely the best teacher, but the only possible teacher.. There is no war between theory and practice. The most valuable experience demands both, and the theory should supplement the practice and not precede it.

Every honest researcher I know admits he's just a professional amateur. He's doing whatever he's doing for the first time. That makes him an amateur. He has sense enough to know that he's going to have a lot of trouble, so that makes him a professional.

People think of the inventor as a screwball, but no one ever asks the inventor what he thinks of other people.

We must look forward to the future as that is where most of us will be spending the rest of our lives.

In America we can say what we think, and even if we can't think, we can say it anyhow.

I don't want men of experience working for me. The experienced man is always telling me why something can't be done. The fellow who has not had any experience is so dumb he doesn't know a thing can't be done - and he goes ahead and does it.

The opportunities of man are limited only by his imagination. But so few have imagination that there are ten thousand fiddlers to one composer.