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

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

Everything comes to him who hustles while he waits.

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

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

Negative results are just what I want. They’re just as valuable to me as positive results. I can never find the thing that does the job best until I find the ones that don’t.

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

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