The articles are grouped under three headings. In "Conditions of Knowledge" the author is concerned with the value assumptions basic to the social sciences. Under "Theoretical Perspectives" the author presents the guiding considerations of his own work in a continuing dialogue with such thinkers as Tocqueville, Marx, Durkheim, and Weber. In the last section, "Studies of Modernization," Bendix takes up problems involved in an analysis of social change though a reexamination of evolutionist assumptions.