Book excerpt: Trust has been the subject of empirical and theoretical inquiry in a range of disciplines, including sociology, economics, psychology, philosophy, public policy and political theory. The book approaches trust from a multi-disciplinary scope of inquiry. It explains why most existing definitions and theories of trust are inadequate. The book examines how trust evolved from a quality of personal relationships into a critical factor in political institutions and representation, and to an abstract and impersonal factor that applies now to complex systems, including monetary systems. It makes a distinctive contribution by recasting trust conceptually in dialectical and pragmatic terms, and reapplying the concept to our understanding of critical issues in politics and political economy.