The three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense.

The doctor of the future will give no medicine, but will involve the patient in the proper use of food, fresh air and exercise

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

It is a terrible situation when the Government, to insure the National Wealth, must go in debt and submit to ruinous interest charges, at the hands of men, who control the fictitious value of gold. Interest is the invention of Satan.

We will make electricity so cheap that only the rich will burn candles.

I have not failed. I've just found 10,000 foundations and individual donors whose priorities don't align with my organization's.

I try not to invent things that people don't need.