Quote

I never did anything worth doing by accident, nor did any of my inventions come indirectly through accident, except the phonograph. No, when I have, fully decided that a result is worth getting, I go about it, and make trial after trial, until it comes.

Genius is one percent inspiration, ninety-nine percent perspiration.

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.