"I never perfected an invention that I did not think about in terms of the service it might give others. I find out what the world needs, then I proceed to try and invent it."

"Just because something doesn't do what you planned it to do doesn't mean it's useless."

"My principal business is to be a failure. I fail in a great many things. Every time I fail, I learn something. That is the way I succeed."

"I have never seen a man who was afraid of a woman. I have seen men who were afraid of women's tongues. I have seen men who were afraid of women's brains. I have seen men who were afraid of women's str…"

"I told [John Kruesi] I was going to record talking, and then have the machine talk back. He thought it absurd. However, it was finished, the foil was put on; I then shouted 'Mary had a little lamb', e…"