Humanity evolves its own restrictions on sexuality for the sake of the advance of civilisation--The presence of a grave sexual problem testifies to the need of more differentiated conceptions--The erotic conflict largely unconscious--Neurosis represents the unsuccessful attempt of the individual to solve the problem in his own case--To understand the idea of the dream as a wish-fulfilment the manifest and latent content must be taken in review--The nature of unconscious wishes--Dream analysis leads to the deepest recesses of the unconscious--The analyst compared to the accoucheur--The highest development of the individual is sometimes in complete conflict with the herd-morality--Psychoanalysis provides the patient with a philosophy of life founded upon insight--Man has within himself the essence of morals--Both the moral and immoral man must accept the corrective of the unconscious--Our sexual morality too undifferentiated--Freud's sexual theory right to a point but too one-sided. III. THE OTHER VIEWPOINT: THE WILL TO POWER 381 The superman--Nietzsche's failure to justify his theories by his life--His view also too one-sided--Adler's theory of neurosis founded upon the principle of power--Case of hysteria discussed from the standpoint of unconscious motivation. 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