These critical essays on J?rgen Habermas's major contribution to sociological theory, The Theory of Communicative Action, provide an indispensable guide for anyone trying to grasp that large, difficult, and important work. The editors' introduction traces the history of the reception of the work and identifies the main themes on which discussion has focused: a concept of communicative rationality; a theory of action based on distinguishing communicative from instrumental reason; a two-level concept of society that integrates lifeworld and system paradigms; and a critical theory of modernity meant to diagnose the sociopathologies of contemporary society. Contributors: Jeffrey Alexander. Johann P. Arnason. Johannes Berger. G?nter Dux. J?rgen Habermas. Hans Joas. Hans-Peter Kr?ger. Thomas McCarthy. Herbert Schn?delbach. Martin Seel. Charles Taylor.