Unconscious sexual motives lurk behind many quarrels, one might almost say behind most quarrels. We have already hinted that dissensions between brothers or sisters are due to rivalry. But even in the quarrels between parents and children we may frequently enough demonstrate the identical undertone for the disharmony. The infant son sees in his father a rival for the mother’s favour. The reverse also occurs, though not so frequently. I was once the witness to a violent quarrel between a father and his son. The father had, as it seemed to me, not the slightest cause for grievance against the son, and yet a little trifle led to a violent altercation that ended in a tragic scene. At the height of the row the father screamed to his wife: “You are to blame for it all! You robbed me of my son’s love!” Naturally one would think that this lava stream belched forth in a great burst of passion from a volcano would contain the truth in its torrid current. And so it does, but in a disguised form. The true reproach should have been directed at the son, and should have been: “You have robbed me of my wife’s love!” We see in this a “transference” of a painful emotion from one person upon another. Such transferences or “displacements” are extremely common in everyday life, and it is only with their aid that we can account for the many domestic conflicts. A man will rarely admit that he erred in the choice of a wife. The feeling of hatred that his wife engenders in him he transfers upon others. Upon whom? The answer is obvious. Upon her next of kin. Most frequently upon her mother, the most immediate cause of her existence. This is the secret meaning of the many mother-in-law jokes, a never-failing and inexhaustible and perpetual theme for wits. So that, for example, if we hear a young woman complain that she cannot bear her husband’s family but that she loves him beyond bounds we may with perfect safety translate this in the language of the unconscious thus: “I would not care a rap about my husband’s family if I did not have to love my husband.” The rows with servants, well-known daily occurrences, become intelligible only if we know the law of transference. An unfaithful wife, who had been betrayed and deserted by her lover, suddenly began to watch her servant girls suspiciously, and to strike them on the slightest provocations. The woman had for years employed “help” without having had more than the customary quarrels with them. After a short sojourn with her husband the rage of the abandoned woman, who would have loved to give her faithless lover a good thrashing in true southern fashion, was transferred upon her servants. And exactly like this the resentment of many a housewife is discharged through these more or less innocent lightning rods, and thus is brought about the phenomenon so common in modern large cities which may be designated as “servant-girl neurosis.”