Thomas Carlyle
He that has done nothing has known nothing.
Men do less than they ought, unless they do all they can.
The history of the world is but the biography of great men.
Let he him who would be moved to convince others, be first moved to convince himself.
Adversity is sometimes hard upon a man , but for one man who can stand prosperity, there are a hundred that will stand adversity.
The main business is not to see what lies dimly at a distance but to do what lies clearly at hand.