G. K., a prominent inventor, 32 years of age, consults me for a number of _remarkable_ compulsory acts which he must always carry out before retiring for the night. He must prove about twenty times to make sure that the doors are all locked. Then he goes through the house and submits every foot of the place to the most painfully detailed and careful search to make sure that no burglar is hidden anywhere. He looks not only under the beds but into every box and drawer and closet, opening and closing each one in turn, and very carefully. One can never tell where a burglar may hide himself! By the time he has concluded this search it is nearly midnight. The terribly arduous procedure fatigues him for he has to look everywhere, emptying even the book cases in the course of his search for fear that the burglar may be hidden back of the books, and it is midnight when he crawls into bed, although he begins his preparations around ten o’clock. Then he is usually tormented with doubt whether he has done everything. It occurs to him that he did not go into the nursery at all, where his three children are asleep. The boy’s room, too, has not been searched. Jumping out of bed he lights a candle and in his night toilette makes his way to the children’s rooms, unable to rest any longer. The girls are already accustomed to seeing him that way, nevertheless they jump out of their sleep scared. In his white nightgown, like a shadow, he moves from place to place with lighted candle in hand, looks under the children’s bed, under the servant girl’s bed and incidentally makes sure that no man lies by her side in bed. During these rounds every door and every window is tried whether it is safely locked. It is now long past midnight. Exhausted he returns to his bed. Again various doubts begin to torture him: did or did he not try this, or that, or the other particular door, is the gasometer safely turned off, and again in his thoughts he rehearses every detail. His logical faculty tells him: you have done everything, you need not have any further concern, it is high time you went to sleep! But logic is powerless when his doubts overpower him. Again he rises and takes a few additional precautions which I need not detail here. Thus it may be three or four o’clock in the morning and even later before he is finally through. Then he lies down in his wife’s bed and wakes her up. Only after coitus, which he carries out regularly every night, he falls asleep. But by that time the night is over and the dawn is just breaking. He remains in bed exhausted, often sleeping till past the noon hour, much to his wife’s disgust. The whole house is in uproar. The children wake up but are taken to another wing of the house because “papa is asleep and must not be waked up!” As he is very wealthy, he has his way. The servants are paid extra well so that they are willing to put up with “that queer household.” Afternoons he is at work in his chemical laboratory.