Fools call wise men fools. A wise man never calls any man a fool.

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

Of the 200 light bulbs that didn't work, every failure told me something that I was able to incorporate into the next attempt.

People are not remembered by how few times they fail, but by how often they succeed. Every wrong step is another step forward

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.

A good idea is never lost. Even though its originator or possessor may die, it will someday be reborn in the mind of another.

I never knew I had an inventive talent until Phrenology told me so. I was a stranger to myself until then!