Whenever you look at a piece of work and you think the fellow was crazy, then you want to pay some attention to that. One of you is likely to be, and you had better find out which one it is. It makes an awful lot of difference.

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

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

Do not bring me your successes; they weaken me. Bring me your problems; they strengthen me.

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.

99 percent of success is built on failure.

Believe and act as if it were impossible to fail.