“The Leshem,” Kabbalist, 1841-1926). Autograph Manuscript, in Hebrew, explaining a Kabbalistic comment of the Vilna Gaon in accordance with a statement of R. Moshe Cordevero.

The “Leshem” as he is known (after the title of his magnum opus Leshem Shevo VeAchlamah, 1909-12) lived in Shavel, Lithuania, his final years were spent in Eretz Israel. He was an outstanding scholar with a phenomenal ability to synthesize all relevant material and lucidly present a discussion with conclusions. Rabbi Fishel Hershkowitz, Dayan of Klausenberg calls him “the Lamdan of the Kabbalists.” He was the grandfather of of the recently departed Rabbi Yoseph Shalom Elyashiv.