Restlessness and discontent are the first necessities of progress. - "Thomas A. Edison"

Restlessness and discontent are the first necessities of progress.
Thomas A. Edison

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I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work.
- Thomas A. Edison
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The three great essentials to achieve anything worth while are, first, hard work; second, stick-to-itiveness; third, common sense.
- Thomas A. Edison