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“If we knew what it was we were doing, it would not be called research, would it?”
― Albert Einstein

“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.”
― Calvin Coolidge

“Success is not final, failure is not fatal: it is the courage to continue that counts.”
― Winston S. Churchill

“I have learned that success is to be measured not so much by the position that one has reached in life as by the obstacles which he has overcome while trying to succeed.”
― Booker T. Washington, Up from Slavery: An Autobiography