Each instinct and passion of man is amoral; it is only the abuse of these passions that makes them wrong. There is nothing wrong about hunger, but there is something wrong about gluttony; there is no sin in thirst, but there is a sin in drunkenness; there is nothing wrong with a man who seeks economic security, but there is something wrong with a man who is avaricious; there is nothing to be despised in knowledge, but there is something to be condemned in pride; there is nothing wrong with the flesh, but there is something wrong in the abuse of the flesh.