Christopher Adair-Toteff is Fellow at the Center for Social and Political Thought, University of South Florida, USA. A philosopher, sociologist, and social theorist, he has published widely in the field of classical sociology. He is the author of Raymond Aron's Philosophy of Political Responsibility, Max Weber's Sociology of Religion, Fundamental Concepts in Max Weber's Sociology of Religion, and Sociological Beginnings. He is the editor of The Anthem Companion to Ernst Troeltsch and The Anthem Companion to Ferdinand Tönnies, and the co-editor of The Calling of Social Thought: Rediscovering the Work of Edward Shils and The Anthem Companion to Raymond Aron.