The question who ought to be boss is like who ought to be the tenor in the quartet? Obviously, the man who can sing tunor.

Thinking first of money instead of work brings fear.

I invented nothing new, I simply assembled the discoveries of other men behind whom there was centuries of work.

There is no failure except failure to serve one's purpose.

The fuel of the future is going to come from fruit like that sumach out by the road, or from apples, weeds, sawdust - almost anything.

If I had asked people what they wanted, they would have said faster horses.

You can do anything if you have enthusiasm.