Lilienfeld was one of the first sociological writers to develop the definite concept of social pathology.[XVI-14] His treatment of this theme, however, was exceedingly weak. He distinguished between a normal and diseased organism and then, by analogy, between a normal and diseased society. Social pathology, according to Lilienfeld, deals with three sets of diseases, namely, of industry, of justice, and of politics. Lilienfeld carried the organic analogy to a ridiculous and puerile extreme when he compared the diseases of industry to insanity; of justice, to delirium; of politics, to paralysis. He also elaborated a system of social therapeutics to correspond to the diseases.

In Albert Schaeffle (1831–1903), the organic analogy found another disciple, but a more worthy one than either Spencer or Lilienfeld. In the thought of Schaeffle, society is not primarily a large organism but a gigantic mind. Schaeffle presented a functional analogy rather than a biological analogy. Whereas Spencer was especially interested in social structures, Schaeffle set his attention upon social functions.

In his functional analogies Schaeffle compared the reason with the legislature in society; the will, with the executive officers; and the esthetic judgment, with the judiciary. Schaeffle’s psychology is inaccurate and on the whole unscientific; his analogies add little to an understanding of society. Nevertheless, his thought on these subjects represents an advance over the ideas of Spencer.

In the Bau und Leben des Socialen Körpers, Schaeffle undertook to develop a complete sociological system. His teachings follow the principle that “function leads structure and structure limits function.” Activities produce developments in bodily structure, and also cause the formation of new social institutions. Bodily structures and social institutions alike limit activities and usefulness. These propositions are a reversal of the emphasis which Spencer maintained. They are fundamentally correct.

Although Schaeffle referred frequently to the “social body,” he did not give the concept a specific meaning. He introduced the term “social process,” but did not analyze its nature. He repudiated the idea that the individual is the social unit; he considered the group to be the all-important unit in society. Natural selection in social evolution manifests itself in conflicts between the ideals of different groups. René Worms, it may be added, has assumed the existence of a social consciousness apart from the consciousness of individuals, and argued that the chief difference between biological organisms and social organizations is one of degree.

Schaeffle considered that government justifies itself in protecting the weaker members of society, and in maintaining the highest welfare of all. He pointed out the social responsibility which rests upon the best educated and most fortunate members of society. Schaeffle wisely emphasized the development of purposeful activity on the part of both the individual and society.

The ideas of John Stuart Mackenzie differ from those of Spencer, Lilienfeld, and Schaeffle. Mackenzie does not use the figure of an organic analogy; he speaks in terms of homologies. According to Mackenzie, society is not like an organism; it is organic.

The organic nature of society is three-fold. (1) There is an intrinsic relation between the parts of society and the whole. The individual reflects the culture of the group in which he has been trained. (2) The development of a group is by virtue of intrinsic processes. A group builds on ideas derived from both the past and from other groups, but it does not genuinely grow unless it takes these ideas and makes them over into a part of its own nature. (3) Society develops towards ends which are discoverable in society itself. By analysis of the ideals and motive forces of a group, it is possible to determine in what direction the group is moving.

Mackenzie argues for the inner principle of things and particularly of society. He believes, however, that knowledge concerning this inner principle and the essential unity of mankind cannot be reduced to a science, but will constitute the basis of a social philosophy. Social philosophy does not supply facts, but seeks to interpret the significance of the special aspects of human life with reference to the social unity of mankind.[XVI-15]

The family and the state are the two forms of association in which the most intimate bonds of union are nurtured. Language, if it can be called a social institution, is perhaps the most fundamental institution of all, because it produces that community of spirit whereby intimacy in social intercourse can take place and whereby the realization of a common good can be achieved.[XVI-16]