Thomas A. Edison
The three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense.
More quotes and aphorisms
Don't focus on negative things; focus on the positive...Being prime minister is a lonely job...It takes considerable knowledge just to realize...Love is the silent saying and saying of a single name...I learned long ago, never to wrestle with a pig...My professional life has nothing to do...