The typical eye sees the ten per cent bad of an idea and overlooks the ninety per cent good.

All human development, no matter what form it takes, must be outside the rules; otherwise we would never have anything new.

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.

An inventor is simply a fellow who doesn't take his education too seriously.

Education is man's going forward from cocksure ignorance to thoughtful uncertainty.Where there is an open mind there will always be a frontier.

Great steps in human progress are made by things that don't work the way philosophy thought they should. If things always worked the way they should, you could write the history of the world from now on. But they don't, and it is those deviations from the normal that make human progress.

Industry prospers when it offers people articles which they want more than they want anything they now have. The fact is that people never buy what they need. They buy what they want.