Alain Caillé is Professor Emeritus of Nanterre University in Paris, France. One of France's most prominent intellectuals, he is the founder of the Mouvement Anti-Utilitariste dans les Sciences Sociales (MAUSS, Anti-utilitarian Movement in the Social Sciences), the chief editor of the Revue du MAUSS and the driving force behind the international convivialist movement. He has published about 30 books and over 500 articles on social theory, Marcel Mauss and the sociology of The gift. His most recent book is Extensions du domaine du don: Demander-donner-recevoir-rendre (2019).

Frédéric Vandenberghe is Professor of Sociology at the Federal University of Rio de Janeiro, Brazil, where he also directs the Sociofilo, the Social Theory Lab. He has published widely on the history of ideas and various aspects of social theory in English, French and Portuguese. With Routledge, he has earlier published A Philosophical History of German Sociology (2009) and What's Critical about Critical Realism? (2014).