The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.
Thomas A. EdisonWe shall have no better conditions in the future if we are satisfied with all those which we have at present.
Thomas A. EdisonThe three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense.
Thomas A. EdisonFailure is really a matter of conceit. People don't work hard because, in their conceit, they imagine they'll succeed without ever making an effort. Most people believe that they'll wake up some day and find themselves rich. Actually, they've got it half right, because eventually they do wake up.
Thomas A. Edison