There is no question that the facts of crowd excitement, of class, caste, race, and national consciousness, do show the way in which the individual members of a group are, or seem to be, dominated, at certain moments and under certain circumstances, by the group as a whole. Worms gives to this fact, and the phenomena which accompany it, the title "collective consciousness." This gives the problem a name, to be sure, but not a solution. What the purpose of sociology requires is a description and an explanation. Under what conditions, precisely, does this phenomenon of collective consciousness arise? What are the mechanisms—physical, physiological, and social—by which the group imposes its control, or what seems to be control, upon the individual members of the group?
This question had arisen and been answered by political philosophers, in terms of political philosophy, long before sociology attempted to give an objective account of the matter. Two classic phrases, Aristotle's "Man is a political animal" and Hobbes's "War of each against all," omnes bellum omnium, measure the range and divergence of the schools upon this topic.
According to Hobbes, the existing moral and political order—that is to say the organization of control—is in any community a mere artefact, a control resting on consent, supported by a prudent calculation of consequences, and enforced by an external power. Aristotle, on the other hand, taught that man was made for life in society just as the bee is made for life in the hive. The relations between the sexes, as well as those between mother and child, are manifestly predetermined in the physiological organization of the individual man and woman. Furthermore, man is, by his instincts and his inherited dispositions, predestined to a social existence beyond the intimate family circle. Society must be conceived, therefore, as a part of nature, like a beaver's dam or the nests of birds.
As a matter of fact, man and society present themselves in a double aspect. They are at the same time products of nature and of human artifice. Just as a stone hammer in the hand of a savage may be regarded as an artificial extension of the natural man, so tools, machinery, technical and administrative devices, including the formal organization of government and the informal "political machine," may be regarded as more or less artificial extensions of the natural social group.
So far as this is true, the conflict between Hobbes and Aristotle is not absolute. Society is a product both of nature and of design, of instinct and of reason. If, in its formal aspect, society is therefore an artefact, it is one which connects up with and has its roots in nature and in human nature.
This does not explain social control but simplifies the problem of corporate action. It makes clear, at any rate, that as members of society, men act as they do elsewhere from motives they do not fully comprehend, in order to fulfil aims of which they are but dimly or not at all conscious. Men are activated, in short, not merely by interests, in which they are conscious of the end they seek, but also by instincts and sentiments, the source and meaning of which they do not clearly comprehend. Men work for wages, but they will die to preserve their status in society, or commit murder to resent an insult. When men act thus instinctively, or under the influence of the mores, they are usually quite unconscious of the sources of the impulses that animate them or of the ends which are realized through their acts. Under the influence of the mores men act typically, and so representatively, not as individuals but as members of a group.
The simplest type of social group in which we may observe "social control" is in a herd or a flock. The behavior of a herd of cattle is, to be sure, not so uniform nor so simple a matter as it seems to the casual observer, but it may be very properly taken as an illustration of the sort of follow-the-leader uniformity that is more or less characteristic of all social groups. We call the disposition to live in the herd and to move in masses, gregariousness, and this gregariousness is ordinarily regarded as an instinct and undoubtedly is pretty largely determined in the original nature of gregarious animals.
There is a school of thought which seeks in the so-called gregarious instincts an explanation of all that is characteristically social in the behavior of human beings.
The cardinal quality of the herd is homogeneity. It is clear that the great advantage of the social habit is to enable large numbers to act as one, whereby in the case of the hunting gregarious animal strength in pursuit and attack is at once increased to beyond that of the creatures preyed upon, and in protective socialism the sensitiveness of the new unit to alarms is greatly in excess of that of the individual member of the flock.
To secure these advantages of homogeneity, it is evident that the members of the herd must possess sensitiveness to the behaviour of their fellows. The individual isolated will be of no meaning, the individual as a part of the herd will be capable of transmitting the most potent impulses. Each member of the flock tending to follow its neighbour and in turn to be followed, each is in some sense capable of leadership; but no lead will be followed that departs widely from normal behaviour. A lead will be followed only from its resemblance to the normal. If the leader go so far ahead as definitely to cease to be in the herd, he will necessarily be ignored.