Jeffrey C. Alexander is Professor of Sociology and Chair of the Sociology Department at Yale University, the author of The Meanings of Social Life: A Cultural Sociology (2003), and the editor of Real Civil Societies (1998). Ron Eyerman is the author of Cultural Trauma: Slavery and the Formation of African American Identity (2001). Bernhard Giesen is the author of Intellectuals and the Nation: Collective Identity in a German Axial Age (1997). Neil J. Smelser is the author of The Social Aspects of Psychoanalysis (California, 1998). Piotr Sztompka is the author of Trust: A Sociological Theory (1999).