The number of people to whom I am indebted in writing this book is too large to mention. However, I would like to single out my good friend and colleague, Warren Bennis. Warren's wise counsel and thoughts are always a deep comfort. I would also like to acknowledge the many conversations I have had with Jean Lipman-Blumen. Needless to say, this book would not have been possible without the constant advice of my good friend and colleague, Ralph Kilmann, to whom this book is dedicated.