Initially we worried whether this book would say all that was needed. We also wondered whether the book was complete. As we wrote, we found there was always more to say. As our thinking and work evolved during the writing process, the manuscript always seemed in need of revision. With each new revision our thinking and work evolved and moved on. Eventually, we realized that the writing, new thinking, and rewriting could go on forever. We then remembered our basic assumptions—that all is change and becoming. We remembered how writing leads to thought development, which leads to a change in practice, which leads back to a difference in what we have written, and so on, and so on. We found that no book is ever complete, that no book will ever be perfect, and that this book like any book is just a narrative of where we are at this point in time. We hope that what we do and think will continue to evolve. We know that any narrative is part of a larger conversation. We know that our narrative provides the opportunity for further conversation with the readers and they with us. In light of this assumption, we hope that this is the beginning of many useful conversations with you.