Men who pride themselves on being shrewd in discovering the weak points, the vanity, the dishonesty, immorality, intrigue, and pettiness of others think they understand character. They know only a part of character. They know only the depths to which some men may sink; they know not the heights to which some men may rise.
William George Jordan, The Kingship of Self-Control: Individual Problems and Possibilities
inspirational, self-improvement