hunger and fighting only for the preservation of its own life. As long as the instinct for self-preservation manifests itself exclusively in such a way, there is no basis for the establishment of a community; not even the most primitive form of all, that is to say the family. The society formed by the male with the female, where it goes beyond the mere conditions of mating, calls for the extension of the instinct of self-preservation, since the readiness to fight for one's own ego has to be extended also to the mate. The male sometimes provides food for the female, but in most cases both parents provide food for the offspring. Almost always they are ready to protect and defend each other; so that here we find the first, though infinitely simple, manifestation of the spirit of sacrifice. As soon as this spirit extends beyond the narrow