I would construct and work along various lines until I found them untenable. When one theory was discarded, I developed another at once. I realized very early that this was the only possible way for me to work out all the problems.

It is the best book ever written on the subject. There is nothing like it!

The value of an idea lies in the using of it.

Everything comes to those who hustle while they wait.

We have merely scratched the surface of the store of knowledge which will come to us. I believe that we are now, a-tremble on the verge of vast discoveries - discoveries so wondrously important they will upset the present trend of human thought and start it along completely new lines .

I never perfected an invention that I did not think about in terms of the service it might give others... I find out what the world needs, then I proceed to invent.

Focus on how the end-user customers perceive the impact of your innovation - rather than on how you, the innovators, perceive it.