I didn't fail ten thousand times. I successfully eliminated, ten thousand times, materials and combinations which wouldn't work. A genius is a talented person who does his homework.
Good fortune is what happens when opportunity meets with preparation.
I never perfected an invention that I did not think about in terms of the service it might give others. I have always found, when I was worrying, that the best thing to do was put my mind upon something, work hard and forget what was troubling me. Genius is one per cent inspiration and ninety-nine per cent perspiration. I start where the last man left off. I don't care so much about making my fortune as I do for getting ahead of the other fellows.