"There is no substitute for hard work."- Thomas A. Edison
"If the power to do hard work is not a skill, it's the best possible substitute for it."- James A. Garfield
"I believe in work, hard work, and long hours of work. Men do not breakdown from overwork, but from worry and dissipation." - Charles Evans Hughes
"If I am anything, which I highly doubt, I have made myself so by
hard work."- Sir Isaac Newton
