John Stuart Mill: '"Utility, or the Greatest Happiness Principle, holds that actions are right in proportion as they tend to promote happiness, wrong as they tend to produce the reverse of happiness. By happiness is intended pleasure and the absence of pain; by unhappiness, pain and the privation of pleasure. Pleasure, and freedom from pain, are the only things desirable as ends; and all desirable things are desirable either for the pleasure inherent in themselves, or as means to the promotion of pleasure and the prevention of pain."'