Wolfgang Fritz Haug, Dr., Dr.h.c., professor of philosophy (retired) at Free University Berlin. He published many monographs, i.e. on Philosophy of Praxis, Hightech-Capitalism, Plural Marxism. His Critique of Commodity Aesthetics appeared in English in 1986 (University of Minnesota Press).Frigga Haug, Dr., Dr.h.c., professor of sociology (retired) at Hamburg University. She published many monographs, i.e. on Marxism-Feminism and Rosa Luxemburg. She is the author of Female Sexualization (Verso, 1987) and Beyond female masochism: memory-work and politics (Verso, 1980).Peter Jehle, Dr., associate professor of Romance Studies at Potsdam University. He is a co-editor of Antonio Gramsci's Prison Notebooks in German and published monographs on Gramsci, Werner Krauss, and Cultural Hegemony in the French and Spanish Enlightenment.Wolfgang Küttler, Dr. Dr., led the department Theory and Methodology of Historical Science at the Central Institute for History (Academy of Sciences, GDR). He published many monographs, i.e. on formation theory in the late Karl Marx and in Lenin, on the philosophy of history and methodology of historiography.