Thomas A. Edison

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

They say President Wilson has blundered. Perhaps he has, but I notice he usually blunders forward.

His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine.

I never did anything by accident, nor did any of my inventions come by accident; they came by work.

To my mind the old masters are not art; their value is in their scarcity.

What you are will show in what you do.

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

There is far more opportunity than there is ability.

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

To invent, you need a good imagination and a pile of junk.

To have a great idea, have a lot of them.

I am proud of the fact that I never invented weapons to kill.

Maturity is often more absurd than youth and very frequently is most unjust to youth.

One might think that the money value of an invention constitutes its reward to the man who loves his work. But... I continue to find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

Your worth consists in what you are and not in what you have.

Hell, there are no rules here - we're trying to accomplish something.

Be courageous. I have seen many depressions in business. Always America has emerged from these stronger and more prosperous. Be brave as your fathers before you. Have faith! Go forward!

Results! Why, man, I have gotten a lot of results. I know several thousand things that won't work.

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

The best thinking has been done in solitude. The worst has been done in turmoil.