Rabbi Shaya Halevi Horowitz, also known as the Shaloh, was a prolific writer of Kabbalah, following the legacy of the Arizal.
This episode of Rabbi Paltiel's Intro to Kabblah series discusses his classic book, Shnei Luchot Habrit, which was left as a testament for his family before his passing and was never meant to be published. It describes his encyclopedic knowledge of all areas of Torah, the structure of his work and the innumerable Torah scholars and Chassidic Rebbis that descend from him.