'Dare to be great'
"A soft, easy life is not worth living, if it impairs the fiber of brain and heart and muscle. We must dare to be great; and we must realize that greatness is the fruit of toil and sacrifice and high courage... For us is the life of action, of strenuous performance of duty; let us live in the harness, striving mightily; let us rather run the risk of wearing out than rusting out." - Theodore Roosevelt