The greatest Kabbalist of the 20th century, Rav Yehuda Leib Halevi Ashlag, who wrote the Sulam (Ladder) commentary on The Book of Zohar, had very few students. A prolific writer, he spent almost all of his time at his desk, so the students that he did have were precious. When spending time away from home and from his students, Rav Yehuda Ashlag would write elaborate letters to provide them with guidance and encouragement. Today these letters offer a window into the special relationships cultivated between the great teacher and his devoted students. A Sage’s Fruit: letters of Baal HaSulam is a compilation of those letters, which are now being presented to English speaking readership for the first time. The unique style and tone that Rav Ashlag uses in his letters offer inspiration and guidance to any seeker of spiritual advancement. The nature of this book is such that it changes a person. Regardless of how many times one may read the text, it constantly takes on new forms, as if reading it for the very first time. Now that these letters have been revealed, it is unclear how we could perceive spiritual advancement without them.