Saadia Gaon

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Saadia ben Joseph (882–942), known by the title Gaon, was the head of the rabbinic academy of Sura in Babylonia and the figure usually credited with founding medieval Jewish philosophy. Born in the Fayyum district of Egypt and trained in a world where Arabic was the language of learning, he became the most consequential Jewish thinker of his age — a translator, grammarian, legal authority, polemicist, and theologian whose reach extended from liturgy to the calendar.

He carried two names through that world. In Hebrew he was Saadia ben Joseph; in the Arabic of his books and his correspondents he was Saʿid ibn Yusuf al-Fayyumi, the man from the Fayyum, the depression of lakes and farmland southwest of the Nile where he was born in 882. He left Egypt young and never returned. His route ran through the Land of Israel and then into the Abbasid heartland, where the two ancient Babylonian academies, Sura and Pumbedita, still governed Jewish law and learning for a diaspora that stretched from Spain to Persia. By the early tenth century Sura had fallen into decline; it was Saadia, an outsider with no local pedigree, who would be summoned to revive it. Almost everything he wrote, he wrote in Judeo- Arabic — Arabic in Hebrew letters — and the choice was deliberate. He meant Judaism to be argued in the philosophical language of its age, with the same tools the Muslim theologians and the Greek-reading philosophers were using across the same cities.

The Book of Beliefs and Opinions

His central work is the Kitab al-Amanat wa-l-Iʿtiqadat, written in Arabic in 933 and later rendered into Hebrew by Judah ibn Tibbon as Sefer ha-Emunot ve-ha-Deʿot — The Book of Beliefs and Opinions. It set out to show that the teachings of revelation and the conclusions of reason converge rather than conflict, arguing each article of faith first by demonstration and then from scripture. The method was drawn from the Muʿtazilite school of Islamic rational theology, whose vocabulary of divine unity and justice Saadia adapted to Jewish ends; the result was the first attempt to give Judaism a complete philosophical defense, and it shaped every Jewish thinker who came after, down to Maimonides, who argued against parts of it.

The architecture of the book is itself an argument. It opens not with God but with an epistemology — a theory of how anything is known at all. Saadia names four roots of certain knowledge: the evidence of the senses, the intuitions of the mind, conclusions reached by valid inference, and reliable tradition, the testimony of a community whose report cannot plausibly be a fabrication. The fourth root is the load-bearing one. It allows revelation to stand as a form of knowledge rather than an exception to it: the tradition of Sinai is trustworthy on the same grounds that make any well-attested report trustworthy, and the reasoning believer and the receiving believer are not two different kinds of person. From that foundation the treatise proceeds through ten essays — creation of the world out of nothing, the unity and incorporeality of God, command and prohibition, obedience and rebellion, merit and demerit, the nature of the soul, resurrection, the redemption of Israel, reward and punishment, and the conduct of a good life. Each is built the same way, reason first and scripture second, so that the reader is shown the doctrine standing on its own feet before being shown it standing in the text.

Two commitments hold the whole structure together, and both are Muʿtazilite in temper. The first is the absolute oneness and unlikeness of God: a being with no body, no parts, no place, comparable to nothing made. The second is divine justice: God commands and rewards in a moral order that human reason can recognize as just, and human beings act with a freedom real enough to make reward and punishment meaningful. Saadia divides the commandments accordingly into those reason could have discovered on its own — the prohibitions of murder, theft, falsehood — and those known only because they were revealed, whose value lies precisely in the discipline of obeying a command whose full reason is not given. The distinction would echo through the whole later tradition, into the rationalism of Maimonides and the apophatic theology of negative attributes that medieval Jewish thought built on the same insistence that nothing positive can be predicated of God.

His handling of one scriptural problem became a doctrine in its own right. Scripture describes a God beyond all form, yet records prophets beholding something on a throne. Saadia answered that what they saw was not God but a created light of surpassing splendor, brought into being so that prophecy would have an object — the created-Glory theology that placed a creature between the unseeable God and the seeing prophet. It is the single most influential move he made in the philosophy of revelation, reworked by Judah Halevi, elaborated by the Pietists of the Rhineland, and answered very differently by the Kabbalists, who located the showing of the hidden God inside the Godhead rather than outside it.

Sura, the exilarch, and the great quarrel

Saadia’s authority rested first on conflict won at a distance. In 921, years before he held any office in Babylonia, a dispute broke out over the calendar. Aaron ben Meir, head of the academy in the Land of Israel, asserted the Palestinian right to fix the festival dates and announced a reckoning that would have set Passover of 922 on a Sunday rather than the Tuesday the Babylonian calculation required — a divergence of roughly two days that would have split the scattered communities into two calendars, keeping different festivals in different years. Saadia threw himself into the defense of the Babylonian reckoning, and the Babylonian position prevailed. The episode made his name across the diaspora and marked the eclipse of the Land of Israel’s authority over the calendar in favor of Babylonia.

That reputation brought him to Sura. In 928 the exilarch David ben Zakkai — the hereditary lay head of Babylonian Jewry, who traced his line to the house of David — appointed Saadia Gaon of the failing academy, over the warning of an elder who feared that two such strong men could not share power. The fear was sound. Within a few years Saadia refused to put his signature to a verdict of the exilarch’s court that he judged unjust, though the gaon of the rival academy of Pumbedita had signed it. The break became total. Each man excommunicated the other and declared him deposed; David named a rival gaon for Sura, and Saadia, in answer, recognized David’s brother as exilarch in his place. For years two heads claimed each office. Saadia spent part of the rupture in Baghdad, out of his post, and turned the enforced leisure to writing — the Book of Beliefs and Opinions belongs to these years, as does Sefer ha-Galui, “The Book of the Exposed,” a Hebrew polemic composed in biblical cadence to vindicate his conduct. A reconciliation came at last, and Saadia was restored to Sura, which he held until his death in 942. The academy did not long outlive him.

Against the Karaites

Much of his remaining energy went into controversy of another kind. From his earliest years Saadia wrote against the Karaites, the movement that had grown from the eighth-century teaching of Anan ben David and that rejected the rabbinic oral tradition, holding to scripture alone. The quarrel was not peripheral. The Karaites argued, with real philological force, that the authority of the rabbis was an accretion the text itself did not sanction; Saadia answered that scripture is unreadable without the tradition that interprets it — that the written law presupposes an unwritten one, and that the community of transmission is the very thing his epistemology had already made a root of knowledge. His defense of rabbinic authority, pressed in tract after tract, did much to secure it, and the line he drew became the settled self-understanding of the rabbinic mainstream. The irony of the encounter is that the Karaites, forced to sharpen their own scholarship against him, became among the finest Hebrew grammarians and exegetes of the age, and borrowed his lexical tools even as they fought his conclusions.

The grammarian and translator

Saadia is a founder of Hebrew philology as much as of Jewish theology. Around the age of twenty he composed the Agron, the earliest Hebrew dictionary — a lexicon and rhyming aid for poets, organized to serve the writing of verse, and a first attempt to make the vocabulary of the sacred language a subject of systematic study. He went on to write the first Hebrew grammar in Arabic and to lay the groundwork for the great Andalusian philologists who followed. His largest single labor was the Tafsir, an Arabic translation of the Hebrew Bible with commentary, the work that earns him the title father of Judeo-Arabic literature. It was no literal crib but a reasoned rendering that smoothed anthropomorphism and explained the sense of difficult verses for an Arabic-speaking world, Jewish and otherwise. The translation took such root among the Jews of Yemen that it was copied into the margins of their Torah scrolls and studied beside the weekly portion; a remnant of that community reads it still. He also produced the Siddur, the first comprehensive Jewish prayer book — the weekday, Sabbath, and festival liturgy gathered, ordered, and furnished with Judeo-Arabic rubrics and with his own liturgical poetry — which fixes him at the head of the documented history of Jewish worship as well.

The Sefer Yetsira as cosmology

Among esoteric readers he is remembered chiefly for his commentary on the Sefer Yetsira, the brief and enigmatic “Book of Formation” that treats the letters of the Hebrew alphabet and the first ten numbers as the elements from which the world is made. Saadia composed his commentary — the Judeo-Arabic Tafsir Kitab al-Mabadiʾ, the Commentary on the Book of Principles — around 931, and it stands at the very head of the text’s commentarial tradition, before Dunash ibn Tamim in Kairouan and Shabbetai Donnolo in southern Italy. He read it as a work of cosmology and natural philosophy rather than mysticism, an approach that sits at some distance from the later Kabbalistic reception of the same text. Where the German Pietists would later read the Sefer Yetsira for the rite of the golem and where Abraham Abulafia would make it the operational core of ecstatic technique, Saadia read it for an account of how the cosmos is ordered — the twenty-two letters and the ten numbers, which he is careful not to confuse with the graded emanations the later doctrine of the ten sefirot would build, taken as a scheme of the elements and forces of nature. His was one of the earliest sustained attempts to make philosophical sense of it, and it stands well before the speculative tradition that the Sefer Yetsira would feed centuries afterward.

The commentary did more than interpret the text; it shaped it. The recension on which Saadia worked — longer than the laconic short text, arranged into eight chapters — is now called the Saadianic recension after him, and was for a long time taken to be a late and artificial reorganization. Recent work on the Cairo Genizah witnesses has unsettled that judgment, with a strong case advanced that this very recension may preserve the oldest recoverable form of the work, so that the version a rationalist used to drain the Sefer Yetsira of mystery might be the version nearest its origin. The full text of Saadia’s commentary has never been published in English; its standard scholarly access remains the nineteenth-century French edition of Mayer Lambert.

The historical Saadia was a rationalist and an institution-builder; the place he holds in esoteric memory rests largely on the company his name keeps.

Texts, editions, and scholarship

The standard biography remains Henry Malter’s Saadia Gaon: His Life and Works (Philadelphia: Jewish Publication Society, 1921), the first volume of the Morris Loeb Series and still the fullest single account of the life, the disputes, and the chronology of the works; it is in the public domain. The Book of Beliefs and Opinions reached modern English in two main forms: Alexander Altmann’s abridged Book of Doctrines and Beliefs (1946) and Samuel Rosenblatt’s complete The Book of Beliefs and Opinions in the Yale Judaica Series (1948), both in copyright. The critical access to Saadia’s Sefer Yetsira commentary is Mayer Lambert’s Commentaire sur le Séfer Yesira ou Livre de la Création par le Gaon Saadya de Fayyoum (Paris: Émile Bouillon, 1891), a Judeo-Arabic edition with facing French translation; it is in the public domain, and no complete English rendering of the commentary has ever appeared. A caution belongs here for readers: Michael Linetsky’s volume titled Rabbi Saadiah Gaon’s Commentary on the Book of Creation (2002) in fact translates Saadia’s commentary on Genesis, not the Sefer Yetsira commentary. The placement of Saadia within the wider field is set out in the Jewish Encyclopedia article (1901–1906) and, for the philosophy, in Sarah Pessin’s Stanford Encyclopedia of Philosophy entry, which traces the Muʿtazilite background, the fourfold theory of knowledge, and the proofs for creation that open the Amanat. Saadia’s place in the world of tenth-century Judeo-Islamic learning — shared between the philosophy of Judaism and the wider falsafa and kalam of Islam — is the subject of Steven Wasserstrom’s Between Muslim and Jew (Princeton, 1995). In all of this he stands as the rabbinic heir to a far older project — the reading of the Torah through philosophy that Philo of Alexandria had begun in Greek a thousand years before, and that the Neoplatonic stream of medieval Jewish thought would carry forward after him.

→ In the library: Sepher Yetzirah (Westcott, 1911) · Mordell — Origin of Letters and Numerals (1914)

→ Related: Neoplatonism · Jewish Philosophy · Babylonia · Philosophical Jewish Esotericism · Medieval Jewish Neoplatonism · Maimonidean Rationalism · Jewish Negative Theology Maimonides Bahya · Saadianic Created Glory Theology · Doctrine Of The Ten Sefirot · Philo Of Alexandria · Islam · Torah · Kabbalah