I would like to acknowledge and thank the following people for their help and support in writing this book:
Claudia Schaab, my friend and editor, who gave me the opportunity to share my long-standing interest in this subject. She helped shape the book, keep me on course, and made the process of writing it an enjoyable one.
Rabbi Eliahu Klein, one of my teachers, for sharing his enthusiasm for Kabbalah. Participating in the discussions in his class helped catalyze my approach to writing this book. My thanks also to Rabbi Klein for reviewing the manuscript and offering his comments.
Amit Morag, my home base in Israel and adopted sister, who has given me invaluable assistance throughout many writing projects.
Harold Glasser, my friend and employer, who generously gave me the time to work on this project and offered helpful feedback.
My brother Mark, who is a constant source of encouragement.
And finally, a heartfelt thanks to Guy Diament, who supported me in many ways throughout the writing of this book.