Cunning is the art of concealing our own defects, and discovering other people's weaknesses.
William HazlittOr have I passed my time in pouring words like water into empty sieves, rolling a stone up a hill and then down again, trying to prove an argument in the teeth of facts, and looking for causes in the dark, and not finding them?
William HazlittTo display the greatest powers, unless they are applied to great purposes, makes nothing for the character of greatness.
William Hazlitt