Book excerpt: How to deal with the relationship between the individual and society as it reveals itself through politics is the large theme of these erudite and stylish essays by a leading scholar whose lifelong concerns have included political behavior, decision-making by groups, and legislative deportment. Truly interdisciplinary in his approach, Heinz Eulau has drawn on all the social sciences in his thirty years of research into the political behavior of citizens in the mass and of legislative elites at the state and local levels of government. Utilizing a variety of social and political theories--theories of reference group behavior, social role, organization, conflict, exchange functions and purposive action--he enriches the methodology of political science while tackling substantive issues such as social class behavior in elections, public policies in American cities, the structures of city councils, and the convergence of politics and the legal system. Eulau is ranked among the few scholars who have shaped the agenda of political science, and his latest work should also prove valuable for sociologists, social psychologists, and theorists of the social sciences.