Rosh Yeshiva at RIETS/Yeshiva University and Sgan Rosh Kollel of the Bella and Harry Wexner Kollel Elyon and Instructor at the Syms School of Business, and Rabbi Of Ohr Saadya of Teaneck, NJ. Author of ten books in Hebrew and English on Jewish Law and Philosophy, most recently "Letter and Spirit: Evasion, Avoidance, and Workarounds in the Halakhic System (RIETS Press/Maggid, 2024).