In contrast with the view of society which regards social institutions and the community itself as the mere instruments and tools of the individuals who compose it, is that which conceives society as resting upon biological adaptations, that is to say upon instincts, gregariousness, for example, imitation, or like-mindedness. The classic examples of societies based on instinct are the social insects, the well-known bee and the celebrated ant. In human society the family, with its characteristic differences and interdependences of the sexes and the age groups, husband and wife, children and parents, most nearly realizes this description of society. In so far as the organization of society is predetermined by inherited or constitutional differences, as is the case pre-eminently in the so-called animal societies, competition ceases and the relations of its component individuals become, so to speak, internal, and a permanent part of the structure of the group.
The social organization of human beings, on the other hand, the various types of social groups, and the changes which take place in them at different times under varying circumstances, are determined not merely by instincts and by competition but by custom, tradition, public opinion, and contract. In animal societies as herds, flocks, and packs, collective behavior seems obviously to be explained in terms of instinct and emotion. In the case of man, however, instincts are changed into habits; emotions, into sentiments. Furthermore, all these forms of behavior tend to become conventionalized and thus become relatively independent of individuals and of instincts. The behavior of the person is thus eventually controlled by the formal standards which, implicit in the mores, are explicit in the laws. Society now may be defined as the social heritage of _habit and sentiment_, _folkways and mores_, _technique and culture_, all of which are incident or necessary to collective human behavior.
Human society, then, unlike animal society is mainly a social heritage, created in and transmitted by communication. The continuity and life of a society depend upon its success in transmitting from one generation to the next its folkways, mores, technique, and ideals. From the standpoint of collective behavior these cultural traits may all be reduced to the one term "consensus." Society viewed abstractly is an organization of individuals; considered concretely it is a complex of organized habits, sentiments, and social attitudes--in short, consensus.