Thomas A. Edison said this quote

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

Famous Quotes of Thomas A. Edison

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

~ Thomas A. Edison

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

~ Thomas A. Edison

When you have exhausted all possibilities, remember this - you haven't.

~ Thomas A. Edison

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

~ Thomas A. Edison