would like to thank all those people in the life of Walter Noll I who helped me to write this book: Chancellor ofIndiana Univer- sity Professor Herman B. Wells, Dr. Klaus Andre, Professor Bemard D. Coleman, Stella DeVito, Dr. Peter Frankel, Professor Morton E. Gurtin, Studiendirektor i.R. Rudolf Hohensee, Faye Mark, Profes- sor Victor J. Mizel, Professor Dietrich Morgenstern, Professor Ralph Raimi, Professor Juan J. Schaffer, Professor Clifford A. Truesdell III, Professor Epifanio G. Virga, Dr. Paul Winkler and many oth- ers. I will be always indebted to Inge Lind, my teacher and friend, for a careful reading ofthe manuscript and her invaluable comments. This book would never have been written without the compas- sion and assistance of many people in Bochum and Marburg. I am especially grateful to Ursula Arras, Dieter and Karola Behm, Achim Buhl, Birgit Berger, Professor Klaus Bohmer, Ute Hagen, Irene Jo- raszik, Professor Hans-Heinrich Korle, Elke and Manfred Kuhne, Jutta Kuster, Johannes Lind, Inka Lins, Annemarie Matt, Astrid Milenz, Matthias Naher, Eckart Rosch, Manfred Schonsee, Profes- sor Werner von Seelen, Christa Seip, Heike Willig, Anita Wolf and many others.