Persistence
Nothing in this world can take the place of persistence. Talent will not; nothing is more common than unsuccessful people with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent.
- Calvin Coolidge
via www.swiss-miss.com from http://goodexperience.com/2009/09/a-lesson-in-strategy.php