I never quit until I get what I want.

Five percent of the people think; ten percent of the people think they think; and the other eighty-five percent would rather die than think.

We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy - sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

I will not say I failed 1000 times, I will say that I discovered there are 1000 ways that can cause failure

The inventor can't do it all, you've got to change people. We have an enormous capacity to invent super-machinery. But our desire to install the device is weak. Human inertia is the problem, not invention. Something in man makes him resist change.

Accomplishing something provides the only real satisfaction in life.

Keep on the lookout for novel ideas that others have used successfully. Your idea has to be original only in its adaptation to the problem you're working on.