This volume considers the problem of social pathology in modern society, in terms of a breakdown of social structure. The author gives a careful explanation of the notion of social structure. Examples are drawn from Marx, Lorenz, and post-war Great Britain, and Professor Wisdom develops the idea that a common underlying factor where social structures go badly wrong lies in the breakdown of caste. When firm structures become loosened, social pathology must be faced. To handle this, society has to utilize an internal social control system. The author outlines and explains one such system, which he describes as an automatic cybernetic control mechanism. This application of the idea of cybernetics to society should contribute to the idea of social stability.