HANS KUHN became a Professor at the University of Basel in 1951. From 1953-1970 he was on the chair of the Institute of Physical Chemistry at the Philipps-University at Marburg, and in 1970 he became Director at the Max Planck Institute for Biophysical Chemistry - Karl-Friedrich-Bonhoeffer-Institut - until he retired in 1985. Professor Kuhn has published papers in such fields as polymer science, quantum chemistry, organized molecular assemblies, and the origin of life. HORST-DIETER FÖRSTERLING was a Professor in the Department of Physical Chemistry at the Philipps-University of Marburg from 1972 until his retirement in 1999. Professor FÖrsterling has taught physical chemistry courses and laboratory courses at all levels, including graduate and advanced graduate courses in spectroscopy, statistical mechanics, reaction kinetics, and quantum mechanics. His research interests include quantum chemistry, reaction mechanisms, oscillating chemical reactions, and chemical waves.