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This article covers the influence of Jewish and Islamic philosophy on each other, focusing especially on the period from 800–1400 CE.
Jewish philosophy includes all philosophy carried out by Jews, or in relation to the religion of Judaism. Until modern Haskalah and Jewish emancipation, Jewish philosophy was preoccupied with attempts to reconcile coherent new ideas into the tradition of Rabbinic Judaism, thus organizing emergent ideas that are not necessarily Jewish into a uniquely Jewish scholastic framework and world-view. With their acceptance into modern society, Jews with secular educations embraced or developed entirely new philosophies to meet the demands of the world in which they now found themselves.
Two terms traditionally used in the Islamic world are sometimes translated as philosophy—falsafa, which refers to philosophy as well as logic, mathematics, and physics; and Kalam, which refers to a rationalist form of Islamic theology.
A century after the Qur'an was revealed, numerous religious schisms arose in Islam. Skeptics sought to investigate the doctrines of the Qur'an, which until then had been accepted as divine revelation. The first independent protest was that of the Qadar ("Destiny"), whose partisans affirmed the freedom of the will, in contrast with the Jabarites (jabar, force, constraint), who maintained the traditional belief in fatalism.
Fatalism is a philosophical doctrine that stresses the subjugation of all events or actions to destiny.
In the second century of the Hegira, a schism arose in the theological schools of Basra, over which Hasan al-Basri presided. A pupil, Wasil ibn Ata, who was expelled from the school because his answers were contrary to tradition, proclaimed himself leader of a new school, and systematized all the radical opinions of preceding sects, particularly those of the Kadarites. This new school or sect was called Mutazilites (from 'tazala, to separate oneself, to dissent). The sect had three principal dogmas: (1) God is an absolute unity, and no attribute can be ascribed to Him. (2) Man is a free agent. Because of these two principles the Mutazilites designate themselves the "AsḦab al-'Adl w'al TauḦid" (The Partisans of Justice and Unity). (3) All knowledge necessary for the salvation of man emanates from his reason; he could acquire knowledge before as well as after Revelation, by the sole light of reason—a fact which, therefore, makes knowledge obligatory upon all men and women, at all times, and in all places.
Basra is an Iraqi city located on the Shatt al-Arab between Kuwait and Iran. It had an estimated population of 2.5 million in 2012. Basra is also Iraq's main port, although it does not have deep water access, which is handled at the port of Umm Qasr.
Abū Saʿīd b. Abi ’l-Ḥasan Yasār al-Baṣrī, often referred to as Ḥasan of Basra for short, or reverentially as Imam Ḥasan al-Baṣrī in Sunni Islam, was an early Muslim preacher, ascetic, theologian, exegete, scholar, judge, and mystic. Born in Medina in 642, Hasan belonged to the third generation of Muslims, all of whom would subsequently be referred to as the tābiʿūn in Sunni Islamic piety. In fact, Hasan rose to become one of "the most celebrated" of the tābiʿūn, enjoying an "acclaimed scholarly career and an even more remarkable posthumous legacy in Islamic scholarship."
Wāṣil ibn ʿAtāʾ (700–748) was an important Muslim theologian and jurist of his time, and by many accounts is considered to be the founder of the Muʿtazilite school of Kalam..
The Mutazilites, compelled to defend their principles against the orthodox Islamic faith, looked for support to the doctrines of philosophy, and thus founded a rational theology, which they designated " 'Ilm-al-Kalam " (Science of the Word); and those professing it were called Motekallamin. This appellation, originally designating the Mutazilites, soon became the common name for all seeking philosophical demonstration in confirmation of religious principles. The first Motekallamin had to combat both the orthodox and the infidel parties, between whom they occupied the middle ground; but the efforts of subsequent generations were entirely concentrated against the philosophers. The later Motekallamin formed a school known as Ash'arism, which regarded itself as the champion of orthodoxy, and references by the later philosophers to "Motekallamin" (theologians) should usually be taken as meaning the Ash'arites.
Philosophy is the study of general and fundamental questions about existence, knowledge, values, reason, mind, and language. Such questions are often posed as problems to be studied or resolved. The term was probably coined by Pythagoras. Philosophical methods include questioning, critical discussion, rational argument, and systematic presentation. Classic philosophical questions include: Is it possible to know anything and to prove it? What is most real? Philosophers also pose more practical and concrete questions such as: Is there a best way to live? Is it better to be just or unjust? Do humans have free will?
ʿIlm al-Kalām, usually foreshortened to Kalām and sometimes called "Islamic scholastic theology", is the study of Islamic doctrine ('aqa'id). It was born out of the need to establish and defend the tenets of Islamic faith against doubters and detractors. A scholar of Kalām is referred to as a mutakallim, and it is a role distinguished from those of Islamic philosophers, jurists, and scientists.
From the ninth century onward, owing to Caliph al-Ma'mun and his successor, Greek philosophy was introduced among the Arabs, and the Peripatetic school began to find able representatives among them; such were Al-Kindi, Al-Farabi, Ibn Sina, and Ibn Roshd, all of whose fundamental principles were considered as heresies by the Motekallamin.
The Peripatetic school was a school of philosophy in Ancient Greece. Its teachings derived from its founder, Aristotle, and peripatetic is an adjective ascribed to his followers.
Abu Yūsuf Yaʻqūb ibn ʼIsḥāq aṣ-Ṣabbāḥ al-Kindī was an Arab Muslim philosopher, polymath, mathematician, physician and musician. Al-Kindi was the first of the Muslim peripatetic philosophers, and is unanimously hailed as the "father of Arab philosophy" for his synthesis, adaptation and promotion of Greek and Hellenistic philosophy in the Muslim world.
Al-Farabi was a renowned philosopher and jurist who wrote in the fields of political philosophy, metaphysics, ethics and logic. He was also a scientist, cosmologist, mathematician and music scholar.
Aristotle, the prince of the philosophers, demonstrated the unity of God; but from the view which he maintained, that matter was eternal, it followed that God could not be the Creator of the world. Again, to assert, as the Peripatetics did, that God's knowledge extends only to the general laws of the universe, and not to individual and accidental things, is tantamount to giving denial to prophecy. One other point shocked the faith of the Motekallamin—the theory of the intellect. The Peripatetics taught that the human soul was only an aptitude—a faculty capable of attaining every variety of passive perfection—and that through information and virtue it became qualified for union with the active intellect, which latter emanates from God. To admit this theory would be to deny the immortality of the soul (see Alexander of Aphrodisias).
Aristotle was a Greek philosopher during the Classical period in Ancient Greece, the founder of the Lyceum and the Peripatetic school of philosophy and Aristotelian tradition. Along with his teacher Plato, he has been called the "Father of Western Philosophy". His writings cover many subjects – including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theatre, music, rhetoric, psychology, linguistics, economics, politics and government. Aristotle provided a complex synthesis of the various philosophies existing prior to him, and it was above all from his teachings that the West inherited its intellectual lexicon, as well as problems and methods of inquiry. As a result, his philosophy has exerted a unique influence on almost every form of knowledge in the West and it continues to be a subject of contemporary philosophical discussion.
Alexander of Aphrodisias was a Peripatetic philosopher and the most celebrated of the Ancient Greek commentators on the writings of Aristotle. He was a native of Aphrodisias in Caria, and lived and taught in Athens at the beginning of the 3rd century, where he held a position as head of the Peripatetic school. He wrote many commentaries on the works of Aristotle, extant are those on the Prior Analytics, Topics, Meteorology, Sense and Sensibilia, and Metaphysics. Several original treatises also survive, and include a work On Fate, in which he argues against the Stoic doctrine of necessity; and one On the Soul. His commentaries on Aristotle were considered so useful that he was styled, by way of pre-eminence, "the commentator".
Wherefore the Motekallamin had, before anything else, to establish a system of philosophy to demonstrate the creation of matter, and they adopted to that end the theory of atoms as enunciated by Democritus. They taught that atoms possess neither quantity nor extension. Originally atoms were created by God, and are created now as occasion seems to require. Bodies come into existence or die, through the aggregation or the sunderance of these atoms. But this theory did not remove the objections of philosophy to a creation of matter. For, indeed, if it be supposed that God commenced His work at a certain definite time by His "will," and for a certain definite object, it must be admitted that He was imperfect before accomplishing His will, or before attaining His object. In order to obviate this difficulty, the Motekallamin extended their theory of the atoms to Time, and claimed that just as Space is constituted of atoms and vacuum, Time, likewise, is constituted of small indivisible moments. The creation of the world once established, it was an easy matter for them to demonstrate the existence of a Creator, and that He is unique, omnipotent, and omniscient.
Toward the middle of the eighth century a dissenting sect—still in existence to-day—called Karaites, arose in Judaism. In order to give a philosophical tinge to their polemics with their opponents, they borrowed the dialectic forms of the Motekallamin, and even adopted their name (Mas'udi, in "Notices et Extraits des Manuscrits de la Bibliothèque Royale," viii. 349-351), and thus transplanted the Kalam gradually to Jewish soil, to undergo the same transformations there as among the Arabs.
One of the most important early Jewish philosophers influenced by Islamic philosophy is Saadia Gaon (892-942). His most important work is Emunoth ve-Deoth (Book of Beliefs and Opinions). In this work Saadia treats of the questions that interested the Motekallamin so deeply—such as the creation of matter, the unity of God, the divine attributes, the soul, etc. — and he criticizes the philosophers severely.
For Saadia creation is not problematic: God created the world ex nihilo , just as Scripture attests; and he contests the theory of the Motekallamin in reference to atoms, which theory, he declares, is just as contrary to reason and religion as the theory of the philosophers professing the eternity of matter. To prove the unity of God, Saadia uses the demonstrations of the Motekallamin. Only the attributes of essence (sifat-al-datiat) can be ascribed to God, but not the attributes of action (sifat-al-af'aliyat). The soul is a substance more delicate even than that of the celestial spheres. Here Saadia contradicts the Motekallamin, who considered the soul an "accident" (compare "Moreh," i. 74), and employs the following one of their premises to justify his position: "Only a substance can be the substratum of an accident" (that is, of a non-essential property of things). Saadia argues: "If the soul be an accident only, it can itself have no such accidents as wisdom, joy, love," etc. Saadia was thus in every way a supporter of the Kalam; and if at times he deviated from its doctrines, it was owing to his religious views; just as the Jewish and Muslim Peripatetics stopped short in their respective Aristotelianism whenever there was danger of wounding orthodox religion.
Jewish philosophy entered upon a new period in the eleventh century. The works of the Peripatetics —Al-Farabi and Ibn Sina (Avicenna)—on the one side, and the "Encyclopedia of the Brethren of Purity"—a transformed Kalam founded on Neoplatonic theories—on the other side, exercised considerable influence upon Jewish thinkers of that age. The two leading philosophers of the period are Ibn Gabirol (Avicebron) and Bahya ibn Pakuda — the former standing upon a purely philosophical platform, the latter upon a religio-philosophical one; and both attaining similar results. Both believe in a universal matter as the substratum of all (except God) that exists; but Bahya goes further and determines what that matter is: it is Darkness ("Ma'ani al-Nafs," translated by Broydé, p. 17). But this matter did not exist from all eternity, as the Peripatetics claimed. It is easy to perceive here the growth of the Peripatetic ideas as to substance and form; but influenced by religion, these ideas are so shaped as to admit the non-eternity of matter. In all that pertains to the soul and its action, Gabirol and Bahya are undoubtedly influenced by the "Brethren of Purity." Man (the microcosm) is in every way like the celestial spheres (the macrocosm). Just as the heavenly spheres receive their motion from the universal soul—which is a simple substance emanating from God—so man receives his motion from the rational soul—another simple substance emanating from Him.
In fact, creation came through emanation, and in the following sequence: (1) The active intellect; (2) the universal soul—which moves the heavenly sphere; (3) nature; (4) darkness—which at the beginning was but a capacity to receive form; (5) the celestial spheres; (6) the heavenly bodies; (7) fire; (8) air; (9) water; (10) earth ("Ma'ani al-Nafs," 72; compare Munk, l.c., p. 201). But as regards the question of the attributes which occupy the Jewish and Muslim theologians so much, Bahya, in his work on ethics, "Hovot ha-Levavot," written in Arabic under the title of "Kitab al-Hidayat fi faraidh al Kulub" (The Duties of the Heart), is of the same opinion as the Motazilites, that the attributes by which one attempts to describe God should be taken in a negative sense, as excluding the opposite attributes. With reference to Gabirol, a positive opinion can not be given on this point, as his "Fons Vitæ" does not deal with the question; but there is reason to believe that he felt the influence of the Asharites, who admitted attributes. In fact, in his poetical philosophy, entitled "Keter Malkut" (The Crown of Royalty), Gabirol uses numerous attributes in describing God. By way of a general statement, one may say that the Neoplatonic philosophy among the Jews of the eleventh century marks a transitional epoch, leading either to the pure philosophy of the Peripatetics or to the mysticism of the Kabbalah.
The twelfth century saw the apotheosis of pure philosophy and the decline of the Kalam, which latter, being attacked by both the philosophers and the orthodox, perished for lack of champions. This supreme exaltation of philosophy was due, in great measure, to Gazzali (1005-1111) among the Arabs, and to Judah ha-Levi (1140) among the Jews. In fact, the attacks directed against the philosophers by Gazzali in his work, "TuḦfat al-Falasafa" (The Destruction of the Philosophers), not only produced, by reaction, a current favorable to philosophy, but induced the philosophers themselves to profit by his criticism, they thereafter making their theories clearer and their logic closer. The influence of this reaction brought forth the two greatest philosophers that the Arabic Peripatetic school ever produced, namely, Ibn Baja (Aven Pace) and Ibn Roshd (Averroes), both of whom undertook the defense of philosophy.
Gazzali found an imitator in the person of Judah ha-Levi. This illustrious poet took upon himself to free religion from the shackles of speculative philosophy, and to this end wrote the "Cuzari," in which he sought to discredit all schools of philosophy alike. He passes severe censure upon the Motekallamin for seeking to support religion by philosophy. He says, "I consider him to have attained the highest degree of perfection who is convinced of religious truths without having scrutinized them and reasoned over them" ("Cuzari," v.). Then he reduced the chief propositions of the Motekallamin, to prove the unity of God, to ten in number, describing them at length, and concluding in these terms: "Does the Kalam give us more information concerning God and His attributes than the prophet did?" (Ib. iii. and iv.) Aristotelianism finds no favor in his eyes, for it is no less given to details and criticism; Neoplatonism alone suited him somewhat, owing to its appeal to his poetic temperament.
But the Hebrew Gazzali was no more successful than his Arabian prototype; and his attacks, although they certainly helped to discredit the Kalam—for which no one cared any longer—were altogether powerless against Peripatetic philosophy, which soon found numerous defenders. In fact, soon after the "Cuzari" made its appearance, Abraham ibn Daud published his "Emunah Ramah" (The Sublime Faith), wherein he recapitulated the teachings of the Peripatetics, Al-Farabi and Ibn Sina, upon the physics and metaphysics of Aristotle, and sought to demonstrate that these theories were in perfect harmony with the doctrines of Judaism. "It is an error generally current," says Ibn Daud in the preface of his book, "that the study of speculative philosophy is dangerous to religion. True philosophy not only does not harm religion, it confirms and strengthens it."
The authority of Ibn Daud, however, did not suffice to give permanence to Aristotelianism in Judaism. This accomplishment was reserved for Maimonides, who discussed the relevance of the philosophy of Aristotle to Judaism; and to this end he composed his immortal work, "Dalalat al-Ḥairin" (Guide for the Perplexed) —known better under its Hebrew title "Moreh Nevuchim"—which served for many centuries as the subject of discussion and comment by Jewish thinkers.
In this work, Maimonides, after refuting the propositions of the Motekallamin, considers Creation, the Unity of God, the Attributes of God, the Soul, etc., and treats them in accordance with the theories of Aristotle to the extent in which these latter do not conflict with religion. For example, while accepting the teachings of Aristotle upon matter and form, he pronounces against the eternity of matter. Nor does he accept Aristotle's theory that God can have a knowledge of universals only, and not of particulars. If He had no knowledge of particulars, He would be subject to constant change. Maimonides argues: "God perceives future events before they happen, and this perception never fails Him. Therefore there are no new ideas to present themselves to Him. He knows that such and such an individual does not yet exist, but that he will be born at such a time, exist for such a period, and then return into non-existence. When then this individual comes into being, God does not learn any new fact; nothing has happened that He knew not of, for He knew this individual, such as he is now, before his birth" ("Moreh," i. 20). While seeking thus to avoid the troublesome consequences certain Aristotelian theories would entail upon religion, Maimonides could not altogether escape those involved in Aristotle's idea of the unity of souls; and herein he laid himself open to the attacks of the orthodox.
Ibn Roshd (or Ibn Rushd or Averroes), the contemporary of Maimonides, closes the philosophical era of the Arabs. The boldness of this great commentator of Aristotle aroused the full fury of the orthodox, who, in their zeal, attacked all philosophers indiscriminately, and had all philosophical writings committed to the flames. The theories of Ibn Roshd do not differ fundamentally from those of Ibn Bajjah and Ibn Tufail, who only follow the teachings of Ibn Sina and Al-Farabi. Like all Arabic Peripatetics, Ibn Roshd admits the hypothesis of the intelligence of the spheres and the hypothesis of universal emanation, through which motion is communicated from place to place to all parts of the universe as far as the supreme world—hypotheses which, in the mind of the Arabic philosophers, did away with the dualism involved in Aristotle's doctrine of pure energy and eternal matter. But while Al-Farabi, Ibn Sina, and other Arab philosophers hurried, so to speak, over subjects that trenched on religious dogmas, Ibn Roshd delighted in dwelling upon them with full particularity and stress. Thus he says, "Not only is matter eternal, but form is potentially inherent in matter; otherwise, it were a creation ex nihilo (Munk, "Mélanges," p. 444). According to this theory, therefore, the existence of this world is not only a possibility, as Ibn Sina declared—in order to make concessions to the orthodox—but also a necessity. Driven from the Arabian schools, Arabic philosophy found a refuge with the Jews, to whom belongs the honor of having transmitted it to the Christian world. A series of eminent men—such as the Tibbons, Narboni, Gersonides—joined in translating the Arabic philosophical works into Hebrew and commenting upon them. The works of Ibn Roshd especially became the subject of their study, due in great measure to Maimonides, who, in a letter addressed to his pupil Joseph ben Judah, spoke in the highest terms of Ibn Roshd's commentary.
Vahid Brown states that the cross-fertilizaton among Jewish and Islamic philosophical mysticism, including Kabbalah and Sufism, in Al-Andalus, Spain during its Golden Age, apart from its impact on European Renaissance, had a strong influence in later developments in both philosophies in the rest of the Jewish and Muslim world.
Moses ben Maimon, commonly known as Maimonides and also referred to by the acronym Rambam, was a medieval Sephardic Jewish philosopher who became one of the most prolific and influential Torah scholars of the Middle Ages. In his time, he was also a preeminent astronomer and physician. Born in Córdoba, Almoravid Empire on Passover Eve, 1135 or 1138, he worked as a rabbi, physician, and philosopher in Morocco and Egypt. He died in Egypt on December 12, 1204, whence his body was taken to the lower Galilee and buried in Tiberias.
Ibn Rushd, often Latinized as Averroes, was a Muslim Andalusian philosopher and thinker who wrote about many subjects, including philosophy, theology, medicine, astronomy, physics, Islamic jurisprudence and law, and linguistics. His philosophical works include numerous commentaries on Aristotle, for which he was known in the West as The Commentator. He also served as a judge and a court physician for the Almohad caliphate.
Early Islamic philosophy or classical Islamic philosophy is a period of intense philosophical development beginning in the 2nd century AH of the Islamic calendar and lasting until the 6th century AH. The period is known as the Islamic Golden Age, and the achievements of this period had a crucial influence in the development of modern philosophy and science. For Renaissance Europe, "Muslim maritime, agricultural, and technological innovations, as well as much East Asian technology via the Muslim world, made their way to western Europe in one of the largest technology transfers in world history.” This period starts with al-Kindi in the 9th century and ends with Averroes at the end of 12th century. The death of Averroes effectively marks the end of a particular discipline of Islamic philosophy usually called the Peripatetic Arabic School, and philosophical activity declined significantly in Western Islamic countries, namely in Islamic Spain and North Africa, though it persisted for much longer in the Eastern countries, in particular Persia and India where several schools of philosophy continued to flourish: Avicennism, Illuminationist philosophy, Mystical philosophy, and Transcendent theosophy.
The Book of Beliefs and Opinions is a book written by Saadia Gaon which is the first systematic presentation and philosophic foundation of the dogmas of Judaism.
Abraham ibn Daud was a Spanish-Jewish astronomer, historian, and philosopher; born at Cordoba, Spain about 1110; died in Toledo, Spain, according to common report, a martyr about 1180. He is sometimes known by the abbreviation Rabad I or Ravad I. His mother belonged to a family famed for its learning.
The Kuzari, full title The Book of Refutation and Proof in Support of the Abased Religion (Kitâb al ḥujja wa'l-dalîl fi naṣr al-dîn al-dhalîl), also known as the Book of the Kuzari, is one of the most famous works of the medieval Spanish Jewish philosopher and poet Judah Halevi, completed around 1140. Originaly written in Arabic, it was then translated into Hebrew and is regarded as one the most important apologetic works of Jewish philosophy.
Avempace is the Latinate form of Ibn Bâjja, full name Abû Bakr Muḥammad Ibn Yaḥyà ibn aṣ-Ṣâ’igh at-Tûjîbî Ibn Bâjja al-Tujibi, was an Arab Andalusian polymath: his writings include works regarding astronomy, physics, and music, as well as philosophy, medicine, botany, and poetry.
Or Adonai, The Light of the Lord, is the primary work of Rabbi Hasdai Crescas, a Jewish philosopher. As some Jews prefer to not use even the respectful title Adonai (Lord) other than in prayer, the book is sometimes called Or Hashem in verbal usage to avoid mentioning even this title of God directly.
Rabbi Moses ben Jacob ibn Ezra, known as Ha-Sallaḥ was a Jewish, Spanish philosopher, linguist, and poet. He was born in Granada about 1055 – 1060, and died after 1138. Ibn Ezra was Jewish by religion but is also considered to have had great influence in the Arabic literary world. He is considered one of Spain's greatest poets and was thought to be ahead of his time in terms of his theories on the nature of poetry. One of the more revolutionary aspects of Ibn Ezra's poetry that has been debated is his definition of poetry as metaphor and how his poetry illuminates Aristotle's early ideas. The impact of Ibn Ezra's philosophical works was minor compared to his impact on poetry, but they address his concept of the relationship between God and man.
Aaron ben Elijah, the Latter, of Nicomedia is often considered to be the most prominent Karaite theologian. He is referred to as "the Younger" to distinguish him from Aaron the Elder. Even though Aaron lived for much of his life in Constantinople, he is sometimes distinguished from another Aaron Ben Elijah by the title "of Nicomedia," signifying another place he lived.
The active intellect is a concept in classical and medieval philosophy. The term refers to the formal (morphe) aspect of the intellect (nous), in accordance with the theory of hylomorphism.
Rabbi Joseph ben Jacob ibn Tzaddik was a Spanish rabbi, poet, and philosopher. A Talmudist of high repute, he was appointed in 1138 dayyan at Cordova, which office he held conjointly with Maimon, father of Maimonides, until his death. Joseph was also a highly gifted poet, as is attested by Alharizi. Several of Joseph's religious poems are found in the Sephardic and African machzorim; and a poem addressed to Judah ha-Levi, on his visit to Cordova en route to Palestine, is included in the latter's diwan.
Shem-Tov ben Joseph ibn Falaquera, also spelled Palquera was a Spanish Jewish philosopher and poet and commentator. A vast body of work is attributed to Falaquera, including encyclopedias of Arabic and Greek philosophies, maqamas, some 20,000 poetic verses, and commentaries on Maimonides’ Guide to the Perplexed. The common theme in Falaquera’s writing was to encourage observant Jews to study philosophy and to appreciate the harmony that existed between Torah and rational truth learned in philosophy. While Falaquera did not advocate teaching the secrets of science and divine sciences to every man, he did advocate the teaching of these truths to a broader range of educated Jewish males than previous proponents of rationalist thinking.
Isaac Albalag was a Jewish philosopher of the second half of the 13th century.
David ibn Merwan al-Mukkamas al-Rakki was a philosopher and controversialist, the author of the earliest known Jewish philosophical work of the Middle Ages. He was a native of Raqqa, Mesopotamia, whence his surname. Harkavy derives his byname from the Arabic "ḳammaṣ", interpreting it as referring to his asserted change of faith. This is uncertain. The name is written "אלקומסי" in Masudi's Al-Tanbih, in a Karaitic commentary to Leviticus, and in a manuscript copy of Jefeth's commentary to the same book, and is perhaps a derivative from the city of Ḳumis in Taberistan. Another Karaite bears the name "Daniel al-Ḳumisi," and in Al-Hiti's chronicle this name is also spelled with a ẓade.
Jewish Kalam was an early medieval style of Jewish philosophy that evolved in response to Kalam in Islam, which in turn was a reaction against Aristotelianism.