We have seen how types of organization, of law, and of consciousness come together into more comprehensive wholes, the forms of social life. These forms of social life, exemplified in my essay by tribal, liberal, and aristocratic society and then again by the varieties of modernity, are the most general types available to social theory. Each of them represents a unique interpretation of what it means to be human. Each confronts its individual members with the recurring demands of human existence, but each presents these in a special way and limits the resources of matter and thought thst can be used to meet them. Perhaps the most pervasive of these continuing problems have to do with the antagonism between the requirements of human individuality and of human sociability, and with the attempt either to subordinate one to the other or to reconcile the two.