Now, however, the brainless living child that sucks, cries, moves arms and legs, and distinguishes pleasure from displeasure, has indisputably an individuality, an _ego_. We must, then, of necessity admit two _egos_ in the child that has both cerebrum and spinal marrow, and that represents to himself his arm as good to taste of, as something to like. But, if two, why not several? At the beginning, when the centers of sight, hearing, smell, and taste, in the brain are still imperfectly developed, each of these perceives for itself, the perceptions in the different departments of sense having as yet no connection at all with one another. The case is like that of the spinal marrow, which at first does not communicate, or only very imperfectly communicates, to the brain that which it feels, e. g., the effect of the prick of a needle, for the newly born do not generally react upon that. Only by means of very frequent coincidences of unlike sense-impressions, in tasting-and-touching, seeing-and-feeling, seeing-and-hearing, seeing-and-smelling, tasting-and-smelling, hearing-and-touching, are the intercentral connecting fibers developed, and then first can the various representational centers, these "I"-makers, as it were, contribute, as in the case of the ordinary formation of concepts, to the formation of the corporate "I," which is quite abstract. This abstract "I"-concept, that belongs only to the adult, thinking human being, comes into existence in exactly the same way that other concepts do, viz., by means of the individual ideas from which it results, as e. g., the forest exists only when the trees exist. The subordinate "I's," that preside over the separate sense-departments, are in the little child not yet blended together, because in him the organic connections are still lacking; which, being translated into the language of psychology, means that he lacks the necessary power of abstraction. The co-excitations of the sensory centers, that are as yet impressed with too few memory-images, can not yet take place on occasion of a single excitation, the cerebral connecting fibers being as yet too scanty.