Rabbi Eisenberg writes, This book is the outcome of a dual encounter. Obviously, much has been written about the meaning of the Jewish holidays but, in my opinion, no one has probed them with as much depth and originality as Rabbi Schneur Zalman of Lyady (1745-1813), one of the prime figures of Hasidism and the founder of the HaBaD movement. This remarkable rabbi, who was a scholar, kabbalist, and spiritual leader, has countless readers and followers today. My encounter with the works of the Alter Rebbe was a dazzling experience, and the hours spent studying his commentaries remain among the most rewarding ones of my life.