This book is offered with my deep gratitude and great affection to my beautiful lady, Jill Kuykendall, who has shared her life with me as my wife, my best friend, and the mother of our children, and who has been my most endearing, loving, and wise teacher for more than forty years. Her kindness, her great good humor, and her generosity have served as the foundation for our family, our relationship, and for all that followed.