Anything that won't sell, I don't want to invent. Its sale is proof of… — Quoted

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

Thomas A. Edison · Success

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Thomas A. Edison

Great ideas originate in the muscles.

Great

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.

Failure

Thomas A. Edison

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.

Death

Thomas A. Edison

Religion is all bunk.

Religion