This collection is designed to answer the demands of students and socialists, teachers and interested readers, for a comprehensive critique of the major schools of European Marxism since the October Revolution. It is composed of a series of carefully documented essays setting out the theories of the major thinkers of the tradition, and submitting them to searching criticism. Essays include critiques of Lukács by Gareth Stedman Jones and Michael Löwy; a survey of the Frankfurt School by Göran Therborn; an assessment of the legacy of Gramsci by John Merrington; exposition and criticism of the work of Sartre by André Gorz and Ronald Aronson; major assessments of Althusser by Norman Geras and André Glucksmann and a wide-ranging interview with the Italian philosopher Lucio Colletti that provides an overview of Western Marxism.