‘In Superdiversity, Steven Vertovec provides a tour de force elucidation of the concept he introduced in 2007, explaining that superdiversity entails much more than rising ethnic heterogeneity tied to immigration, but is instead rooted in a deeper complexification of human society wherein social categories are reconfigured to be multiple, flexible, and porous rather than static and fixed, yielding increasingly complex identities that social scientists and policy makers must recognize and accept.’ Douglas S. Massey, Henry G. Bryant Professor of Sociology and Public Affairs, Princeton University, USA‘Steven Vertovec’s concept of "superdiversity" is widely used across the social sciences for understanding social change. In this ambitious and most informative new book, the author specifies and updates his theory; responds to his critics; creates bridges with the interdisciplinary literatures on categorization, identity, and boundaries; and analyzes all we know about the responses and backlash to diversification. For all these reasons, this book is sure to be a "must read" for anyone interested in immigration, diversity, cosmopolitanism, racism, inequality, and related topics. I recommend it with much enthusiasm.’Michèle Lamont, Robert I. Goldman Professor of European Studies and Professor of Sociology and African American Studies, Harvard University, USA ‘A masterly account that takes us from the development of the superdiversity concept and its use in the social sciences to public responses to diversification. Vertovec’s well-written and insightful book is a must read for students and scholars who hope to understand changes in the nature of diversity in today’s world.’ Nancy Foner, Distinguished Professor of Sociology, Hunter College and Graduate Center, City University of New York, USA‘Superdiversity is now a key concept in research on cultural complexity. In this excellent, eagerly anticipated book, its originator explains and explores the implications of the current ‘diversification of diversity’, showing why diversity cannot be reduced to simple categories. It deserves to be read by everyone trying to make sense of the complex social realities of the contemporary world.’Thomas Hylland Eriksen, Professor of Social Anthropology, University of Oslo, Norway