influence the feelings and behaviour of the subject. So strict, however, is the guard between them and the conscious that they are never allowed to pass the barrier between one sphere and the other except in disguised and fantastically distorted forms by which their true meaning is closely concealed. It has been perhaps Freud’s most remarkable thesis that dreams are manifestations of this emergence of desires and memories from the unconscious into the conscious field. During sleep the repressing force which guards the frontier between conscious and unconscious is weakened. Even then, however, such ideas as emerge into the conscious can do so only in a worked up and distorted form, so that their significance can be disengaged from the grotesque jumble of the actual dream only by a minute inquiry according to a difficult and highly technical method. {75} By this method, however, is to be obtained a deep insight into the otherwise irrecoverable emotional history of the individual, the structure of his temperament, and, if he is mentally abnormal, the meaning of his symptoms.
II
The foregoing