Thomas A. Edison

Genius is one percent inspiration, ninety-nine percent perspiration.

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

Being busy does not always mean real work. The object of all work is production or accomplishment and to either of these ends there must be forethought, system, planning, intelligence, and honest purpose, as well as perspiration. Seeming to do is not doing.

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.

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.

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

Just because something doesn't do what you planned it to do doesn't mean it's useless.

Many of life's failures are people who did not realize how close they were to success when they gave up.

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

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

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