• It is a law of our humanity, that man must know both good and evil; he must know good through evil. There never was a principle but what triumphed through much evil; no man ever progressed to greatness and goodness but through great mistakes.

    Frederick William Robertson: It is a law of our humanity, that man must know both good and evil; he must know good through evil. There never was a principle but what triumphed through much evil; no man ever progressed to greatness and goodness but through great mistakes.
    "Lectures and Addresses on Literary and Social Topics".