Begoin reviews the development of psychoanalytic theory concerning the concept of an internal, containing space. In the primal scene in the Wolf Man case, three persons were involved in the interpersonal drama. But in terms of the bipolarity of instincts this was a drama with four persons, the two parents and the masculine and feminine aspects of the infantile self. Melanie Klein introduced a fifth character, the internal child of the mother, developed from the infantile concept of the interior of the mother's body. This move introduced the notion of a three-dimensional space in the interior of a body, and containing objects. The mechanisms of projection and introjection are involved in this notion of an interior. The object is internal and external, and psychoanalysis studies the articulation between the real and the fantasy objects, as Klein and Winnicott insisted. The depressive position corresponds to the move from partial to complete object and is the central position in psychic development. Before the depressive position, the body of the child and