The most necessary task of civilization is to teach people how to think. It should be the primary purpose of our public schools. The mind of a child is naturally active, it develops through exercise. Give a child plenty of exercise, for body and brain. The trouble with our way of educating is that it does not give elasticity to the mind. It casts the brain into a mold. It insists that the child must accept. It does not encourage original thought or reasoning, and it lays more stress on memory than observation.

The real measure of success is the number of experiments that can be crowded into 24 hours.

I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours - and thrived on it.

Having a vision for what you want is not enough...Vision without execution is hallucination

Nature is truly wonderful. Only man is truly foul.

Time is really the only capital that any human being has, and the only thing he can't afford to lose.

To have a great idea, have a lot of them.