Margaret S. Archer is Professor in Social Theory at the École Polytechnique Fédérale de Lausanne and Directrice of its Centre d'Ontologie Sociale. She was Professor of Sociology at the University of Warwick from 1979 until 2010. She has written over twenty books including Making Our Way through the World: Human Reflexivity and Social Mobility (2007), Structure, Agency and the Internal Conversation (2003) and Being Human: The Problem of Agency (2000).