A man must have a certain amount of intelligent ignorance to get anywhere.

The price of progress is trouble.

We are just in the kindergarten of uncovering things; there is no downcurve in science.

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.

The person who doesn't know something can't be done will often find a way to go ahead and do it.

I often say that research is a way of finding out what you are going to do when you can't keep on doing what you are doing now.

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.