environment; but proximately for the purpose in hand, these forces may best be stated in terms of an environment, partly human, partly non-human, and a human subject with a more or less definite physical and intellectual constitution. Taken in the aggregate or average, this human subject is more or less variable; chiefly, no doubt, under a rule of selective conservation of favorable variations. The selection of favorable variations is perhaps in great measure a selective conservation of ethnic types. In the life history of any community whose population is made up of a mixture of divers ethnic elements, one or another of several persistent and relatively stable types of body and of temperament rises into dominance at any given point. The situation, including the institutions in force at any given time, will favor the survival and dominance of one type of character in preference to another; and the type of man so selected to continue and to further elaborate the institutions handed down from the past will in some considerable measure shape these institutions in his own likeness. But apart from selection as between relatively stable types of character and habits of mind, there is no doubt simultaneously going on a process of selective adaptation of habits of thought within the general range of aptitudes which is characteristic of the dominant ethnic type or types. There may be a variation in the fundamental character of any population by selection between relatively stable types; but there is also a variation due to adaptation in detail within the range of the type, and to selection between specific habitual views regarding any given social relation or group of relations.
For the present purpose, however, the question as to the nature of the adaptive process—whether it is chiefly a selection between stable types of temperament and character, or chiefly an adaptation of men's habits of thought to changing circumstances—is of less importance than the fact that, by one method or another, institutions change and develop. Institutions must change with changing circumstances, since they are of the nature of an habitual method of responding to the stimuli which these changing circumstances afford. The development of these institutions is the development of society. The institutions are, in substance, prevalent habits of thought with respect to particular relations and particular functions of the individual and of the community; and the scheme of life, which is made up of the aggregate of institutions in force at a given time or at a given point in the development of any society, may, on the psychological side, be broadly characterized as a prevalent spiritual attitude or a prevalent theory of life. As regards its generic features, this spiritual attitude or theory of life is in the last analysis reducible to terms of a prevalent type of character.
The situation of today shapes the institutions of tomorrow through a selective, coercive process, by acting upon men's habitual view of things, and so altering or fortifying a point of view or a mental attitude handed down from the past. The institutions—that is to say the habits of thought—under the guidance of which men live are in this way received from an earlier time; more or less remotely earlier, but in any event they have been elaborated in and received from the past. Institutions are products of the past process, are adapted to past circumstances, and are therefore never in full accord with the requirements of the present. In the nature of the case, this process of selective adaptation can never catch up with the progressively changing situation in which the community finds itself at any given time; for the environment, the situation, the exigencies of life which enforce the adaptation and exercise the selection, change from day to day; and each successive situation of the community in its turn tends to obsolescence as soon as it has been established. When a step in the development has been taken, this step itself constitutes a change of situation which requires a new adaptation; it becomes the point of departure for a new step in the adjustment, and so on interminably.
It is to be noted then, although it may be a tedious truism, that the institutions of today—the present accepted scheme of life—do not entirely fit the situation of today. At the same time, men's present habits of thought tend to persist indefinitely, except as circumstances enforce a change. These institutions which have thus been handed down, these habits of thought, points of view, mental attitudes and aptitudes, or what not, are therefore themselves a conservative factor. This is the factor of social inertia, psychological inertia, conservatism. Social structure changes, develops, adapts itself to an altered situation, only through a change in the habits of thought of the several classes of the community, or in the last analysis, through a change in the habits of thought of the individuals which make up the community. The evolution of society is substantially a process of mental adaptation on the part of individuals under the stress of circumstances which will no longer tolerate habits of thought formed under and conforming to a different set of circumstances in the past. For the immediate purpose it need not be a question of serious importance whether this adaptive process is a process of selection and survival of persistent ethnic types or a process of individual adaptation and an inheritance of acquired traits.
Social advance, especially as seen from the point of view of economic theory, consists in a continued progressive approach to an approximately exact "adjustment of inner relations to outer relations", but this adjustment is never definitively established, since the "outer relations" are subject to constant change as a consequence of the progressive change going on in the "inner relations." But the degree of approximation may be greater or less, depending on the facility with which an adjustment is made. A readjustment of men's habits of thought to conform with the exigencies of an altered situation is in any case made only tardily and reluctantly, and only under the coercion exercised by a stipulation which has made the accredited views untenable. The readjustment of institutions and habitual views to an altered environment is made in response to pressure from without; it is of the nature of a response to stimulus. Freedom and facility of readjustment, that is to say capacity for growth in social structure, therefore depends in great measure on the degree of freedom with which the situation at any given time acts on the individual members of the community-the degree of exposure of the individual members to the constraining forces of the environment. If any portion or class of society is sheltered from the action of the environment in any essential respect, that portion of the community, or that class, will adapt its views and its scheme of life more tardily to the altered general situation; it will in so far tend to retard the process of social transformation. The wealthy leisure class is in such a sheltered position with respect to the economic forces that make for change and readjustment. And it may be said that the forces which make for a readjustment of institutions, especially in the case of a modern industrial community, are, in the last analysis, almost entirely of an economic nature.
Any community may be viewed as an industrial or economic mechanism, the structure of which is made up of what is called its economic institutions. These institutions are habitual methods of carrying on the life process of the community in contact with the material environment in which it lives. When given methods of unfolding human activity in this given environment have been elaborated in this way, the life of the community will express itself with some facility in these habitual directions. The community will make use of the forces of the environment for the purposes of its life according to methods learned in the past and embodied in these institutions. But as population increases, and as men's knowledge and skill in directing the forces of nature widen, the habitual methods of relation between the members of the group, and the habitual method of carrying on the life process of the group as a whole, no longer give the same result as before; nor are the resulting conditions of life distributed and apportioned in the same manner or with the same effect among the various members as before. If the scheme according to which the life process of the group was carried on under the earlier conditions gave approximately the highest attainable result—under the circumstances—in the way of efficiency or facility of the life process of the group; then the same scheme of life unaltered will not yield the highest result attainable in this respect under the altered conditions. Under the altered conditions of population, skill, and knowledge, the facility of life as carried on according to the traditional scheme may not be lower than under the earlier conditions; but the chances are always that it is less than might be if the scheme were altered to suit the altered conditions.
The group is made up of individuals, and the group's life is the life of individuals carried on in at least ostensible severalty. The group's accepted scheme of life is the consensus of views held by the body of these individuals as to what is right, good, expedient, and beautiful
