"We cannot do everything at once, but we can do something at once."

"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."

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

"Persistence and determination alone are omnipotent."