Isaac de Leon

Isaac de Leon, (born in Toledo - not to be confused with Isaac Leon ibn Tzur, author of Megilat Esther on Rambam), a Kabbalist and author of Maʿaseh Nissim, was a native of Leon, ‎and the pupil of Isaac Campanton. He was part of the Kabbalistic circles that produce the work "‎Sefer Ha-Meshiv". An opponent of philosophy, he nonetheless studied Aristotelian logic as part of ‎the formal approach to halakhah of the school of Isaac Campanton. Joseph Karo and others ‎honored him with the title of "the great teacher." He was more than seventy years of age at his ‎death, which occurred shortly before the expulsion of the Jews from Spain.‎