We know that every collector is an unconscious Don Juan who has transferred his passion from an erotic upon a non-erotic sphere. But we also know that the passion with which the collected objects are loved emanates from the erotic domain. And what did our psychoanalysis of the above case bring out? Remarkably enough a rivalry between the two brothers which went back all the way to their youth. The older one had the privileges of the first-born and was a good-for-nothing. The younger one was a pattern of what a child ought to be. From their childhood they had been rivals for the affection of their parents, and more especially of the mother. We encounter here the so-called “Oedipus motive,” a son’s love for his mother--a motive whose instinctive force and urge are still too imperfectly appreciated. The two had been rivals, the older one being jealous of the parents’ preference for the younger one, and the younger jealous of the older one’s privileges. In this we have the first of the deeper motives for the quarrel. Further investigation brought a second and a third motive to light. The older had, very naturally, married first, and repeatedly boasted in the presence of his younger and unmarried brother of his wife’s charms and virtues. In fact, he had even led him into his wife’s bedroom that he might see for himself what a treasure he possessed. (You see the motives of such stories as “Gyges and his Ring” and “King Candaules” occurring even nowadays.) At that moment a great passion for his sister-in-law flared up in the younger brother’s breast. Here we have then a second cause for dissension. But other factors are also involved. Our pious young man married a beautiful woman and would have been happy if he had not been the victim of a jealous passion. Jealousy always has its origin in the knowledge of one’s inferiority. He thought he noticed that his older brother was too devoted to his wife. And during an excursion into the country they had been in the woods a little too long, as he thought, and it occurred to him--and here we have the fourth motive--to tempt his sister-in-law. He is a Don Juan who runs after every petticoat and wants to drain life in large draughts. N. S. was a pious virtuous man who knew how to turn his sinful cravings to good account for the success of his business and to bad account as far as his health was concerned. The brother whom he despised openly he envied in secret. But we could mention still other motives for their quarrel if Mrs. Grundy considerations did not bar the way....