"Nothing in this 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 derelicts. Persistence and determination alone are omnipotent."
- Calvin Coolidge
"Flaming enthusiasm, backed up by horse sense and persistence, is the quality that most frequently makes for success."
- Dale Carnegie