Because ideas have to be original only with regard to their adaptation to the problem at hand, I am always extremely interested in how others have used used them.

Nature is truly wonderful. Only man is truly foul.

An idea is something that won't work unless you do.

IF PARENTS PASS ENTHUSIASM ALONG TO THEIR CHILDREN, THEY WILL LEAVE THEM AN ESTATE OF INCALCULABLE VALUE

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.".

The greatest invention in the world is the mind of a child.

There is great value in disaster. All our mistakes are burned up. Thank God we can start a new.