I never did anything by accident, nor did any of my inventions come by accident; they came by work.
Thomas A. EdisonThe endeavor to change universal power by selfish supplication I do not believe in.
Thomas A. EdisonThe three things that are most essential to achievement are common sense, hard work and stick-to-it-iv-ness.
Thomas A. EdisonThe stomach is the only part of man which can be fully satisfied. The yearning of man's brain for new knowledge and experience and for more pleasant and comfortable surroundings never can be completely met. It is an appetite which cannot be appeased.
Thomas A. Edison