When I have fully decided that a result is worth getting I go ahead of it and make trial after trial until it comes.

Mr. Edison worked endlessly on a problem, using the method of elimination. If a person asked him if he were discouraged because so many attempts proved unavailing, he would say, "No, I am not discouraged, because every wrong attempt discarded is another step forward.".

I remember that I was never able to get along at school. I was at the foot of the class.

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.

Invention is 1% inspiration and 99% perspiration

The beauty of a great idea lies in the art of using it.

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.