What contrasts more radically with the idea of freedom than the absolute nature of obsessional neurosis? Nevertheless the circuits of undoing of F., like those of the Rat Man, show another purpose, that of constituting an insurmountable obstacle, the assurance of a space of freedom preserved as much from paternal intrusion as from the analyst’s curiosity. Freud finally saw the intensity of obsessional ambivalence as the result of a “constitutionally” excessive infantile aggressiveness. It seems, however, to have constituted for children a solution to the difficulties of separation-individuation, and to the narcissistic issues of the first confrontations with peers on entering school. Both coincide with conflicts of anality. Psychic disentanglement between parents and children and the recathexis of transitionality are at the heart of the treatment of these difficult pathologies.