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

You will never stub your toe standing still. The faster you go, the more chance there is of stubbing your toe, but the more chance you have of getting somewhere.

Learn how to fail intelligently.

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

I am not interested in the past. I am interested in the future, for that is where I expect to spend the rest of my life.

The only time you mustn't fail is the last time you try.

The price of progress is trouble.