Two per cent. is genius, and ninety-eight per cent. is hard work.

The value of an idea lies in the using of it.

I have always consistently opposed high-tension and alternating systems of electric lighting...not only on account of danger, but because of their general unreliability and unsuitability for any general system of distribution.

Results? Why, man, I have gotten lots of results! If I find 10,000 ways something won't work, I haven't failed. I am not discouraged, because every wrong attempt discarded is often a step forward.

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.".

Show me a thoroughly satisfied man - and I will show you a failure.

The body is a community made up of its innumerable cells or inhabitants.