Whatever the mind of man creates, should be controlled by man's character.

When I have eliminated the ways that will not work, I will find the way that will work.

Negative results are just what I want. They’re just as valuable to me as positive results. I can never find the thing that does the job best until I find the ones that don’t.

Life's most soothing things are a child's goodnight and sweet music.

The first requisite for success is to develop the ability to focus.

I did not fail two thousand times. I merely found two thousand ways not to make a lightbulb.

I have always consistently opposed high-tension and alternating systems of electric lighting...not only on account of danger, but because of their general unreliability and unsuitability for any general system of distribution.