Theodore Roosevelt

"When you're at the end of your rope, tie a knot and hold on"

"The only man who never makes mistakes is the man who never does anything."

"To educate a person in the mind but not in morals is to educate a menace to society."

"The things that will destroy America are prosperity-at-any-price, peace-at-any-price, safety-first instead of duty-first, the love of soft living, and the get-rich-quick theory of life."

"With self-discipline most anything is possible."

"A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad."