"With his economics of singularities, Lucien Karpik has given researchers even more than a masterpiece of economic sociology. He introduces new methods, new concepts, and new results. He shows how the differences between markets are more important than their similarities, and how our approach to markets should deal first and foremost with qualities. This book puts economics back on the road toward generality!"--Olivier Favereau, Université Paris X and Centre National de la Recherche Scientifique

"Valuing the Unique is an exciting foray onto new ground for economic sociology. In studying markets of singularities, Lucien Karpik provides a wealth of fascinating examples of judgment devices whereby we value goods and services that are incommensurable. A singular achievement!"--David Stark, author of The Sense of Dissonance: Accounts of Worth in Economic Life

"This is one of these rare books that reveals a new economic province. Far removed from the familiar domain of customary economics there lies the realm of singularities--goods and services for which the issue of quality lies beyond any question of price. By successfully integrating culture and market, and the politics of the market, Valuing the Unique has implications for general and theoretical sociology. It presents a most lively and useful read for those interested in the manner in which markets actually function."--Philippe Steiner, Université Paris-Sorbonne

"Valuing the Unique is the most important book to be published in economic sociology in many years. Karpik develops a full-fledged sociological alternative to understanding the problem of singularities, and offers conceptual breakthroughs that make hitherto puzzling issues much easier to comprehend. No debates on the issue of the valuation of goods will be able to ignore Karpik's theoretical contribution."--Jens Beckert, director of the Max Planck Institute for the Study of Societies

"This is a wonderfully stimulating book--evocative, provocative, ambitious, and certain to spark debate. It poses important questions and offers new conceptual tools for economic sociology. There is a lot to think about here."--Bruce Carruthers, Northwestern University