If I have had any success, it's due to luck, but I notice the harder I work, the luckier I get.

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.

A research problem is not solved by apparatus; it is solved in a man's head.

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.

I think that the greatest education in the world is the education which helps one to be able to do the right things at the time it has to be done.

This problem, too, will look simple after it is solved.

It doesn't matter if you try and try and try again, and fail. It does matter if you try and fail, and fail to try again.