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Richard Feynman
I learned very early the difference between knowing the name of something and knowing something.
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Albert Einstein
It’s not that I’m so smart, it’s just that I stay with problems longer.
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Calvin Coolidge
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.