Thomas Edison

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

I have not failed. I've just found 10,000 ways that won't work.

Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time.

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

There's a way to do it better - find it.

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

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

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

I find out what the world needs, then I proceed to invent it.

I owe my success to the fact that I never had a clock in my workroom.

The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense.

I am not discouraged, because every wrong attempt discarded is another step forward.

The doctor of the future will give no medicine, but will interest his patients in the care of the human frame, in diet, and in the cause and prevention of disease.

If we all did the things we are capable of doing, we would literally astound ourselves.

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

I never perfected an invention that I did not think in the first instance would be of some use to the world.

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

There is no substitute for hard work.

I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.

I have friends in overalls whose friendship I would not exchange for the favor of the kings of the world.