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

- Thomas A. Edison

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

- Thomas A. Edison

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

- Thomas A. Edison

I know this world is ruled by infinite intelligence. Everything that surrounds us- everything that exists - proves that there are infinite laws behind it. There can be no denying this fact. It is mathematical in its precision.

- Thomas A. Edison

I start where the last man left off.

- Thomas A. Edison

I find my greatest pleasure, and so my reward, in the work that precedes what the world calls success.

- Thomas A. Edison

What a man's mind can create, man's character can control.

- Thomas A. Edison

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

- Thomas A. Edison

It is astonishing what an effort it seems to be for many people to put their brains definitely and systematically to work.

- Thomas A. Edison

Nearly every man who develops an idea works it up to the point where it looks impossible, and then he gets discouraged. That's not the place to become discouraged.

- Thomas A. Edison

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

- Thomas A. Edison

Everything comes to him who hustles while he waits.

- Thomas A. Edison

Great ideas originate in the muscles.

- Thomas A. Edison

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

- Thomas A. Edison

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

- Thomas A. Edison

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

- Thomas A. Edison

Restlessness is discontent and discontent is the first necessity of progress. Show me a thoroughly satisfied man and I will show you a failure.

- Thomas A. Edison

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

- Thomas A. Edison

Waste is worse than loss. The time is coming when every person who lays claim to ability will keep the question of waste before him constantly. The scope of thrift is limitless.

- Thomas A. Edison

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!

- Thomas A. Edison