The essays included in this volume are based on papers delivered at the International Symposium on Varieties of Marxism, held at the Van Leer Jerusalem Foundation on June 16-19,1974, and dedicated to the memory of George Lichtheim. When the idea of such a symposium was first raised, the organizers planned to have George Lichtheim as one of the main speakers at the event. In our last and brief meeting in London, I suggested this to him and Lichtheim...