I am indebted to my wife, Eileen, and my friend, Lyn Roberts, for checking my spelling and expression, and for volunteering suggestions to increase comprehension. I am also grateful to Jeff Schwaner and the staff at GU for preparing the manuscript for publication in the US. I owe more than I can express to those on whose wisdom and experience I have drawn, those acknowledged in the footnotes and bibliography and others whose lives have touched mine. I am also grateful to Anne Prime for permission to use the photo that appears on the front cover. [3]

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