'John Goldthorpe's earlier work such as On Sociology and Sociology as a Population Science has contributed in lucid and seminal ways to the integration of empirical research and theory formation in sociology, convincingly showing, too, that sociological theory, adequately conceived, differs very much from second-hand history of ideas. His new book Pioneers of Sociological Science, provocative and vintage Goldthorpe in its clarity, is a major contribution to the genealogy of sociology as a population science. Providing a critical account of the ideas of pioneers, the book shows how core principles of sociology as an empirically and theoretically informed discipline have been shaped.' Werner Raub, Professor of Sociology, Utrecht University