I know of over 3,000 ways [that] a light bulb does not work.

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.

I am proud of the fact that I never invented weapons to kill.

Genius is one percent inspiration and ninety-nine percent perspiration. As a result, a genius is often a talented person who has simply done all of his homework.

I believe in the existence of a Supreme Intelligence pervading the Universe.

My mother was the making of me. She was so true and so sure of me, I felt that I had someone to live for - someone I must not disappoint. The memory of my mother will always be a blessing to me.

Radio is just a fashion contrivance that will soon die out. It is obvious that there never will be invented a proper receiver!