IV. THE TWO TYPES OF PSYCHOLOGY 391

Thinking the natural adaptive function for introvert, feeling for the extrovert--The sexual theory promulgated from the standpoint of feeling, the power theory from that of thought--Criticism of both theories indispensable--Symptoms of neurosis are aims at a new synthesis of life--Definition of positive value as energy in a useful form--In neurosis energy is located in an inferior form--Sublimation a transference of sexual energy to another sphere--Destiny often frustrates purely rational sublimations--Rationalism, the world-war an example of its breakdown--So-called "disposable energy"--Case of American business-man--The types have different problems--The feelings of the introvert relatively conventional and undifferentiated--The thinking of the extrovert colourless and dry--The types apt to marry, but not to understand one another--The theories of the types led to a new theory of psychogenic disturbances--Neurosis postulates the existence of an unconscious conflict--New theory declares it to lie between the natural conscious function and the repressed undifferentiated co-function--Repressed feelings of introvert projected as vague physical symptoms--Repressed thought of extrovert projected as hysterical symptoms--In analysis the libido liberated from the unconscious phantasies is projected on to the physician--It finds its way into the transference, which in turn is dissolved--The new channel for the libido is already found.