The secession of Adler’s faction was finished before the Congress at Weimar which took place in 1911, while the one of the Swiss School began after this date. Strangely enough, the first indications of it were found in some remarks by Riklin in popular articles printed in Swiss literature, from which the general public learned, even before Riklin’s closest colleagues, that psychoanalysis had succeeded in overcoming some regretable mistakes which discredited it. In 1912 Jung boasted, in a letter to me from America, that his modifications of psychoanalysis had overcome the resistances to it in many persons, who hitherto wanted to know nothing about it. I replied that this was nothing to boast about, that the more he sacrificed of the hard-won truths of psychoanalysis, the less resistances he would encounter. This modification for the introduction of which the Swiss are so proud, again was nothing more or less than the theoretical suppression of the sexual factor. I admit that from the very beginning I have regarded this “progress” as a too-far-reaching adaptation to the demands of actuality. These two retrogressive movements, tending away from psychoanalysis, which I will now compare, also resemble each other in the fact that they are seeking to obtain a favorable opinion by means of certain lofty points of view, as _sub specie æternitatis_. In the case of Adler, this rôle is played by the relativity of all knowledge, and by the rights of the personality to construe artificially any piece of knowledge to suit the individual; while Jung insists on the cultural historical rights of youth to throw off any fetters that tyrannical old age with ossified views would forge for it. These arguments require some repudiation. The relativity of all our knowledge is a consideration which may be used as an argument against any other science besides psychoanalysis. This idea originates from well-known reactionary streams of the present day, inimical to science, and wishes to give the appearance of a superiority to which we are not entitled. Not one of us can guess what may be the ultimate judgment of mankind about our theoretical efforts. There are examples to show that what was rejected by the next three generations was corrected by the fourth and its recognition thus brought about. There is nothing else for the individual to do than to defend, with all his strength, his conviction based on experience after he has carefully listened to his own criticisms and has given some attention to the criticisms of his opponents. Let him be content to conduct his affair honestly and not assume the office of judge, which is reserved for a remote future. To accentuate personal arbitrariness in scientific matters is bad; it evidently wishes to deny to psychoanalysis the value of a science, which, to be sure, Adler has already depreciated by the aforementioned remark. Any one who highly regards scientific thinking