Mr. Edison worked endlessly on a problem, using the method of elimination. If a person asked him if he were discouraged because so many attempts proved unavailing, he would say, "No, I am not discouraged, because every wrong attempt discarded is another step forward.".

We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy - sun, wind and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

What is a college? An institute of learning. What is a business? An institute of learning. Life, itself, is an institute of learning.

I never did anything worth doing entirely by accident. . . Almost none of my inventions came about totally by accident. They were achieved by having trained myself to endure and tolerate hard work.

The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.

Most of my ideas belonged to other people who never bothered to develop them.

Accomplishing something provides the only real satisfaction in life.