Pleasure Principle

IN the psycho-analytical theory of the mind we take it for granted that the course of mental processes is automatically regulated by ‘the pleasure-principle’: that is to say, we believe that any given process originates in an unpleasant state of tension and thereupon determines for itself such a path that its ultimate issue coincides with a relaxation of this tension, i. e. with avoidance of ‘pain’ or with production of pleasure.