"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. The slogan 'press on' has solved and always will
solve the problems of the human race."

-- Calvin Coolidge