With deep gratitude I acknowledge the colleague-friends who have read portions of this manuscript and shared their valued reflections. They have helped me enormously. They include: Robert Arnold, M.D.; Howard Brody, M.D., Ph.D.; Charles Dougherty, Ph.D.; Howard Entman, M.D.; Peter Jacobson, J.D.; Erich Loewy, M.D.; Thomas Kennedy, Ph.D.; Laurence McCullough, Ph.D.; Charles Pinches, Ph.D.; Michael Rie, M.D.; Lawrence Schneiderman, M.D.; and Margery Shaw, M.D., J.D.
I would particularly like to thank those who have critically reviewed the manuscript in its entirety: Terrence Ackerman, Ph.D.; H. Tristram Engelhardt, Jr., Ph.D., M.D.; Leonard Fleck, Ph.D.; Paul Menzel, Ph.D.; Robert M. Nelson, M.D.; Stuart Spicker, Ph.D.; Stephen Wear, Ph.D.; and several anonymous reviewers. The time, thought, and help they each so generously gave improved this volume immeasurably. While I therefore owe them great credit for its strengths, the book's flaws remain, of course, my own.
And finally, I offer a special and very personal thanks to Tris Engelhardt. He has supported and encouraged my work since I was a graduate student—before I entered this profession, and long before he proposed (in a pub in Sydney, Australia) that I write this volume. Thank you, Tris.