Helmut Satz is professor of theoretical physics at Bielefeld University in Germany. A pioneer in the study of matter at extreme temperatures and densities, he and his group initiated the investigation of such matter using computer simulation techniques, providing results that were essential for the start of high energy nuclear collision experiments. Satz spent many years on the staff of Brookhaven National Laboratory and also at CERN, in Geneva, where he provided theoretical guidance to the experimental groups. In Bielefeld, he served for several years as director of the Center for Interdisciplinary Research, supporting the dialogue between the different fields of research. Prof. Dr. Helmut Satz University of Bielefeld 33619 Bielefeld Germany.