began by re-reading the book with an affectionate but critical
eye, noting the places where it continued to speak to today’s re-
ality and, even more important, identifying those passages that
were no longer resonant. He gave me a map for revising the
book that made the task far less daunting. And, throughout the
process, he was a friend and colleague of the best sort, offering
sharp insights as well as praise, alert for errors but protective of
my voice and ideas, and both involved in the work and unobtru-
sive. In short, he was a joy to work with. For the anniversary
edition, Eric Paul Biederman contributed valuable insight, able
editing, and a critical eye. Finally, I must thank my longtime
friend and collaborator Patricia Ward Biederman. Pat and I
have the kind of working relationship people dream about. For
decades now, she has stimulated my ideas and helped them soar.
Each time we work together, I am reminded that the best col-
laborations are those in which there is much thought, much
passion, and much laughter.Acknowledgmentsxii0465014088_fm.qxd:0738208175_fm.qxd 1/9/09 1:16 PM Page xii