Isaac ben Sheshet

Part of a series on
Jewish philosophy
Hellenistic Positions: Hasmonean Sadducean Pharisee Boethusian People: Aristobulus of Alexandria Philo of Alexandria
Medieval Influenced by: Brethren of Purity Ibn Bajjah (Avempace) Ismaili philosophy Jewish Kalam Kabbalah Rabbinic Judaism Spanish and European: Hasdai ibn Shaprut Ibn Gabirol Abraham bar Hiyya Bahya ibn Paquda Judah Halevi Abraham ibn Daud Joseph ibn Tzaddik Abraham ibn Ezra Maimonides Nachmanides Samuel ibn Tibbon Joseph ben Judah Shem-Tov ibn Falaquera Gersonides Moses of Narbonne Isaac ben Sheshet Hasdai Crescas Joseph Albo Elia del Medigo Judah Minz Isaac Abarbanel Judah Leon Abravanel Yemenite: Natan'el al-Fayyumi Mansur ibn Sulayman al-Ghamari Other: Isaac Israeli Saadia Gaon al-Mukkamas Hibat Allah Abu'l-Barakat Ibn Kammuna Positions: Maimonidean / Anti-Maimonidean Kabbalist Karaism Talmudic Tosafist
Modern Positions: Orthodox Sephardic Chabad Chassidic Conservative Reform Existentialist Reconstructionist Holocaust Renewal Neo-Hasidic Mussar Rambamist People: Francisco Sanches Uriel da Costa Baruch Spinoza Salomon Maimon Joseph Solomon Delmedigo Elijah Ba'al Shem of Chelm Eliezer ben Elijah Ashkenazi Tzvi Ashkenazi Jacob Emden Samuel Hirsch Shneur Zalman of Liadi Simcha Bunim of Peshischa Samson Raphael Hirsch Jacob Abendana Isaac Cardoso David Nieto Isaac Orobio de Castro Moses Mendelssohn Samuel David Luzzatto Elijah Benamozegh Moses Hess Eliezer Berkovits Eliyahu Dessler Monsieur Chouchani Emmanuel Levinas Martin Buber Gershom Scholem Abraham Isaac Kook Joseph Soloveitchik Menachem Mendel Schneerson
Topics Anger Chosen people Eschatology Ethics Faith God Happiness Holiness Holocaust Messiah Microcosm–macrocosm Righteousness
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Isaac ben Sheshet Perfet (or Barfat) (1326–1408) (Hebrew: יצחק בן ששת) was a Spanish Talmudic authority, also known by his acronym, Rivash (ריב"ש‎). He was born at Valencia and settled early in life at Barcelona, where he studied at the school of Nissim of Gerona.