Failures, repeated failures, are sign-posts on the road to achievement. The only time you don't want to fail is the last time you try something (and it works).

High achievement always takes place in the framework of high expectation.

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

If you're doing something the same way you have been doing it for ten years, the chances are you are doing it wrong.

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

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.

One fails forward toward success.