The three great essentials to achieve anything worth while are: Hard work, Stick-to-itiveness, and Common sense. – Thomas A. Edison

Everyone who achieves success in a great venture, solves each problem as they came to it. They helped themselves. And they were helped through powers known and unknown to them at the time they set out on their voyage. They keep going regardless of the obstacles they met. – W. Clement Stone

It is not by muscle, speed, or physical dexterity that great things are achieved, but by reflection, force of character, and judgment. – Marcus Tullius Cicero