There is a great difference between knowing and understanding: you can know a lot about something and not really understand it.

A problem well stated is a problem half solved.

People are very open-minded about new things -- as long as they're exactly like the old ones.

The biggest job we have is to teach a newly hired employee how to fail intelligently. We have to train him to experiment over and over and to keep on trying and failing until he learns what will work.

An inventor is simply a person who doesn't take his education too seriously. He tries and fails maybe a 1000 times. If he succeeds once then he's in.