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 failures.
Persistence and determination alone are omnipotent.Calvin Coolidge, 1872-1933 (President of the United States of America 1923-29)
The image is the coat of arms of President Coolidge. Who knew US Presidents had such things. Apparently many have had, usually through their family, they are not given by right to holders of the office.
The quote itself reminds me of a recent recruiting meme: Hire Attitude; Train Skills.