Willibald Steinmetz is Professor of Modern and Contemporary History at Bielefeld University.Michael Freeden is Emeritus Professor of Politics at the University of Oxford and Professorial Research Associate, SOAS, University of London. His main interests are the nature of political thinking, the analysis of ideologies, and the study of liberal thought from the 19th century onwards.Javier Fernandez-Sebastian is Professor of History of Political Thought at the University of the Basque Country. He has published extensively on modern intellectual and conceptual history, with a particular focus on Spain and the Iberian world.