Boltanski and Thvenot's "On Justification" is one of the most important contributions to the field of economic sociology in the past decade. It does not fit neatly into any of the major theoretical perspectives that currently dominate the field--institutionalism, organizational ecology, network analysis, rational choice, or transaction-cost economics. But precisely because it is so original, it has great potential to chart new territory and enliven debates. The book has already had an enormous impact in France, where it is one of the founding documents of the 'economics of conventions' school. It is sure to have a big impact in sociology in the United States and Britain too. I could list at least twenty major sociologists who have asked me when the book will be translated."--David Stark, Columbia University