Persistence

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 logan “press on” has solved and always will solve the problems of the human race.

– Calvin Coolidge

 

And a shorter, but equally worthy quote from the same source:

 

I have found it advisable not to give too much heed to what people say when I am trying to accomplish something of consequence. Invariably they proclaim it can’t be done. I deem that the very best time to make the effort.
– Calvin Coolidge