I am a vegetarian as well as a passionate anti-alcoholic, because I can thus make better use of my brain.

Youth doesn't take advice.

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 invent.

From his neck down a man is worth a couple of dollars a day, from his neck up he is worth anything that his brain can produce.

Every wrong attempt discarded is another step forward

My main purpose in life is to make money so I can afford to go on creating more inventions.

Success is the product of the severest kind of mental and physical application.