"Nothing in the world can take the place of persistence.
Talent will not; nothing is more common than unsuccessful men
with talent. Genius will not; unrewarded genius is almost a
proverb. Education will not; the world is full of educated
derilicts. Persistence and determination alone are omnipotent.
The slogan 'Press On' has solved and always will solve the
problems of the human race." 
- Calvin Coolidge