'Despite its influence, neoinstitutional theory has long been known by its parts, with organizational theorists focusing one strand and political sociologists on another. Institutional Theory, a collection of foundational and in some case little known essays and new reflective chapters by the theory's progenitor, John Meyer, and one of its most gifted expositors, Ron Jepperson, is the first volume to present institutional theory as a single coherent approach to social analysis, with compelling results. Because most work in institutional theory has been published in conventional journal-article format, using unpretentious language and familiar comfortably positivist methods, it has been easy to underestimate the extent to which it represents a fundamentally radical break with received theory, challenging and reworking such basic categories as action and agency, levels of analysis, and organization in ways that will defamiliarize and reconstitute the reader's understanding of the social world. This welcome volume will be a critically important resource for social theory for many years to come.' Paul DiMaggio, Professor of Sociology, New York University