This volume features the papers presented by leading comparatists from the UK and abroad at an international workshop on ‘Comparative Legal Reasoning: une journée d’étude aux alentours du travail de Geoffrey Samuel’ at Reid Hall, Paris on 3 December 2016. Contributors include John Bell (University of Cambridge), Anne Bottomley (University of Kent), Sir Ross Cranston (London School of Economics and Political Science), Maks Del Mar (Queen Mary), Simone Glanert (University of Kent), Pierre Legrand (Sorbonne), P.G. Monateri (Università di Torino), Horatia Muir Watt (Sciences Po), François Ost (Université Saint-Louis), Pascal Pichonnaz (Université de Fribourg), Geoffrey Samuel (University of Kent) and Franz Werro (Université de Fribourg and Georgetown University Law Center).