Al-Ash'ari (874-936)

An Arab lineage, a city of scholars

Al-Ash'ari was born at Basra, a great port and intellectual centre of Abbasid Iraq, in 260 AH (874 AD).^[5] The biographical tradition links him to Abû Mûsâ al-Ash'arî, companion of Muhammad who became governor of Basra and then appointed arbiter during the conflict between Ali ibn Abi Talib and Mu'awiya at Siffîn in 657 — an episode which the article devoted to Ali ibn Abi Talib develops on its political side.^[6] The young 'Alî ibn Ismâ'îl thus grew up in a city where grammarians, traditionists of hadith and, above all, the most influential Mu'tazilite school of its time crossed paths.

Ninth-century Basra buzzed with the controversies born half a century earlier from the Mihna, the doctrinal "ordeal" imposed between 833 and 848 by the Abbasid caliph al-Ma'mûn and then his successors: judges and scholars were ordered to profess publicly that the Qur'an was a creature of God in time, not his coeternal word. The traditionist Ahmad ibn Hanbal, flogged and imprisoned for his refusal, became the symbol of resistance to this state theological policy, until the caliph al-Mutawakkil put an end to it in 848 by proclaiming the uncreatedness of the Qur'an.^[7] Al-Ash'ari was thus born a generation after this crisis: he inherited from it a climate in which Mu'tazilism, in political retreat, nevertheless remained intellectually dominant in the scholarly circles of Basra — and it was precisely in this milieu that he cut his teeth.

Al-Jubbâ'î, the Mu'tazilite master

Around adolescence, al-Ash'ari became the pupil of Abû 'Alî al-Jubbâ'î (d. 303 AH / 915–916), the leading figure of the Mu'tazilite school of Basra and one of the most respected theologians of his time.^[8] He remained his disciple for several decades, to the point of becoming, according to tradition, one of his most gifted spokesmen — capable of defending and refining the Mu'tazilite arguments on the nature of God, the creation of the Qur'an and human freedom.

It was during this "Mu'tazilite" period that al-Ash'ari began writing what would become one of his major works, the Maqâlât al-islâmiyyîn ("The Doctrines of the Muslims"), an immense heresiographical inventory of the sects and theological schools of the Islam of his time — Sunnis, Shiites, Kharijites, Murji'ites and the Mu'tazilites themselves — together with an exposition of the great questions of kalâm on the divine attributes, the nature of the world and causality.^[9] At least part of this work is said to have been written before his break with Mu'tazilism; the exact chronology of its different layers nevertheless remains debated among specialists: in any case, it is a first-hand witness to the state of the theological debates of ninth- to tenth-century Islam, written by someone who experienced them from within before combating them.^[10]

The discreet imprint of Ibn Kullâb

Alongside al-Jubbâ'î, another theologian would weigh lastingly on al-Ash'ari's thought without ever having been formally his direct master: 'Abd Allâh ibn Sa'îd ibn Kullâb (d. around 240 AH / 854–855), a transitional figure between pure traditionalism and kalâm. Ibn Kullâb already maintained that God possesses real and eternal attributes of essence (knowledge, power, life, speech), without thereby lapsing into the anthropomorphism of the most literal traditionists; he sought a middle way between Mu'tazilism and rigid Hanbalism.^[11] Several historians of kalâm regard Ibn Kullâb as the true initiator of the vocabulary and concepts that tradition would later attribute wholesale to al-Ash'ari — an honest historiographical nuance worth knowing before making al-Ash'ari an inventor ex nihilo.^[12]

Two other figures nourished this same intermediate sensibility before al-Ash'ari: al-Hârith al-Muhâsibî (d. 243 AH / 857), mystic and theologian of Baghdad, and Abû al-'Abbâs al-Qalânisî. This intellectual soil — neither Mu'tazilite nor literalist — explains why al-Ash'ari's break with al-Jubbâ'î was not a leap into the void, but the culmination of a current already taking shape for two generations.^[13]

A disagreement left unanswered

Biographical tradition retains one specific episode as the trigger of the break. Al-Ash'ari is said to have put to his master al-Jubbâ'î the question known as the three brothers: take three brothers — one pious who died in obedience, one impious who died in rebellion, and a third who died as a child before the age of reason — what becomes of each before God? Al-Jubbâ'î replied that the first is rewarded, the second punished, and the third neither, having had no time to earn merit. Al-Ash'ari then objected: had God prolonged the child's life, the child could, according to the Mu'tazilite doctrine of "the best for the creature" (al-aslah), have been either saved or lost — so why did God not let him live, since that would have been more favorable to him? Al-Jubbâ'î, tradition reports, could give no satisfactory answer to this challenge to the divine obligation always to do "the best" for His creatures — a pillar of Mu'tazilite ethics.^[14] This local logical failure is obviously not enough on its own to explain twenty-five years of subsequent theological controversy; but tradition retains it as the initial grain of sand.

The dreams of Ramadan

The most widespread account — transmitted notably by Ibn 'Asâkir (d. 571 AH / 1176) in his Tabyîn kadhib al-muftarî ("Manifestation of the Slander's Lie"), a work written two and a half centuries after the events to defend al-Ash'ari's memory against his detractors — places the definitive break within the framework of three dreams during a month of Ramadan.^[15] In them, Al-Ash'ari is said to have seen Muhammad appear to him three times: the first time enjoining him to uphold the prophetic traditions (hadîth) rather than rational speculation alone; ten days later, a second time, reiterating the injunction; then, on the twenty-seventh night of the month, a third time, specifying that he must not for all that abandon the rational method itself, but use it to support hadith with philosophical arguments.^[16]

This three-stage narrative structure — whose strict historicity is debated by modern specialists, who see in it a classic hagiographic pattern rather than a verbatim record — in fact sums up rather well the theological program that al-Ash'ari was indeed to carry out: not to reject kalâm as the strictest traditionalists do, but to turn it to the service of the orthodoxy he had himself learned to combat from within.^[17]

The public proclamation in the great mosque of Basra

According to the account transmitted by Ibn 'Asâkir and summarized by Richard McCarthy in his 1953 critical edition, al-Ash'ari is said to have withdrawn for some fifteen days in meditation before ascending, on a Friday, the pulpit (minbar) of the great mosque of Basra, to proclaim his break publicly before the congregation gathered for prayer:^[18]

"Let him who knows me know who I am; let him who does not know me know that I am Abû al-Hasan 'Alî al-Ash'arî, that I formerly held that the Qur'an is created, that the eyes of men shall not see God, and that creatures create their own acts themselves. Here I am: I repent of having been a Mu'tazilite, I renounce these opinions and I undertake to refute the Mu'tazilites and to expose their infamy and turpitude." — proclamation attributed to al-Ash'ari, reported by Ibn 'Asâkir, Tabyîn kadhib al-muftarî, summarized in Richard McCarthy, The Theology of al-Ash'ari, Beirut, Imprimerie Catholique, 1953^[19]

Whether this scene is a stylized reconstruction rather than a literal report matters less than what it condenses: the break concerns three precise points — the creation of the Qur'an, the possibility of seeing God in Paradise, and the origin of human acts — which would remain, throughout his life, the three pillars of his constructive theology.

Twenty-four years devoted to controversy

After his break, al-Ash'ari left Basra for Baghdad, where he completed his legal training under the Shafi'ite jurist Abû Ishâq al-Marwazî (d. 340 AH / 951).^[20] He spent the rest of his life there, some twenty-four years, entirely devoted, according to biographical tradition, to the systematic refutation of the doctrines he judged heretical — Mu'tazilites, extremist Shi'ites, philosophers, and various minority currents.^[21] His way of life there is described as one of remarkable austerity: his disciple Bundâr reports that his annual expenditure did not exceed seventeen dirhams, funded by the income of a small inheritance rather than by an official post or princely patronage.^[22]

Tradition attributes to him between ninety and nearly three hundred titles, depending on the ancient bio-bibliographical lists — a figure to be treated with caution, since these catalogues sometimes poorly distinguish independent treatises from mere chapters. Of all this, only a handful survive today.^[23]

The great surviving titles

Three works, principally, have come down through the centuries:

• The Maqâlât al-islâmiyyîn wa ikhtilâf al-musallîn ("The Doctrines of the Muslims and the Disagreements of Those Who Pray"), a vast heresiography begun before his conversion, which remains a first-order source for the history of 9th-century Islamic theological schools.
• The Kitâb al-Lumâ' ("The Book of Flashes"), a brief doctrinal treatise methodically defending, point by point, Ash'arite positions against Mu'tazilite objections — a text edited and translated into English by the Jesuit Richard McCarthy in 1953, with the Arabic text facing.^[24]
• The Risâla ilâ ahl al-thaghr ("Epistle to the People of the Frontier"), a doctrinal summary letter sent to a frontier community, often regarded as a later statement of his thought, closer to traditionalism.

To these three texts must be added the Istihsân al-khawd fî 'ilm al-kalâm ("On the Merits of Engaging in the Science of kalâm"), a short programmatic treatise in which al-Ash'ari replies directly to those who, in the strictest traditionalist circles, rejected on principle any use of argued rational theology as a blameworthy innovation (bid'a).^[25]

The authenticity problem of the Ibāna

A fifth text, the Kitâb al-Ibâna 'an usûl al-diyâna ("The Elucidation of the Foundations of Religion"), raises a substantial authenticity problem that encyclopedic honesty requires flagging. This treatise, in its transmitted form, adopts a tone markedly closer to strict Hanbalite traditionalism than the other works attributed to al-Ash'ari, and its method departs from the kalâm reasoning characteristic of the Lumâ'. Several contemporary scholars maintain that the received text was retouched, or even substantially rewritten, by later traditionalist circles keen to enlist al-Ash'ari's authority in the service of a more literalist theology than his own; others defend its authenticity by linking it to a hypothetical late third phase of his thought, closer to Hanbalism.^[26] Ignispedia reports this debate without taking sides: philological prudence dictates that a presentation of Ash'arite doctrine should not be based on the Ibāna alone, but should cross-check it with the Lumâ' and the Maqālāt, the only texts whose attribution raises no serious difficulty.

Defending kalâm against the traditionalists

Al-Ash'ari's first battle, after his break, was fought not against the Mu'tazilites but against part of his own camp: the strictest Hanbali traditionalists, for whom any rational, argued discussion of the articles of faith — kalâm itself as a method, irrespective of its conclusions — constituted a blameworthy innovation (bid'a) imported from Greek philosophy. In his Istihsân al-khawd fî 'ilm al-kalâm, al-Ash'ari answers this methodological objection: since the Qur'an itself argues, refutes the idolaters and constructs lines of reasoning (for example the cosmological proofs in the suras on creation), nothing forbids the believer from making those lines of reasoning explicit and systematizing them in order to answer the heretics of his time — provided that reason remains at the service of revelation and not its sovereign judge.^[27] This is the theoretical hinge that allows al-Ash'ari to present himself as a defender of Sunni orthodoxy with the very weapons he had learned among the Mu'tazilites — a gesture he explicitly claims in his proclamation of rupture quoted above.

The divine attributes: neither negation nor anthropomorphism

The heart of the disagreement with Mu'tazilism concerns the divine attributes — knowledge, power, life, speech, hearing, sight — which the Qur'an attributes to God. The Mu'tazilites, anxious to preserve the absolute oneness of God (tawhîd) against any risk of pluralizing His essence, interpreted them in a largely metaphorical way: God "knows" in the sense that His essence is identical with His knowledge, without any really distinct attribute.^[28] At the other extreme, certain literalist traditionalists risked reading Qur'anic expressions such as God's "hand" or "face" in an almost corporeal way.^[29]

Al-Ash'ari, taking up and systematizing a position already sketched by Ibn Kullâb, cuts through with a formula that became the hallmark of his school: the divine attributes are real, distinct in a sense from the essence without being exterior to it and without multiplying divine unity, and they must be affirmed without [asking] how (bilā kayfa) — without seeking to fix their modality, without negating them by metaphor, and without reducing them to a creaturely mode either.^[30] This formula of "unknowable modality" would become the standard position of classical Sunnism on this precise point, taken up by both the Ash'arites and most moderate traditionalists.^[31]

The Jesuit Michel Allard, in his reference thesis Le problème des attributs divins dans la doctrine d'al-Ash'arî et de ses premiers grands disciples (Beirut, Imprimerie Catholique, 1965), showed the subtlety and the internal tensions of this solution: recognizing attributes really distinct from the divine essence without making God a composite of multiple parts posed to al-Ash'ari's disciples — al-Bâqillânî foremost among them — a problem of metaphysical coherence that took them several generations to stabilize.^[32]

"God has eternal attributes, distinct from His essence without being exterior to it, and they must be confessed without [asking] how." — synthesis of the classical Ash'arite doctrine of the attributes, as expounded by Daniel Gimaret, La doctrine d'al-Ash'arî, Paris, Le Cerf, coll. "Patrimoines — Islam", 1990^[33]

The Qur'an, uncreated speech of God

On the second point of his rupture, al-Ash'ari joins the traditionalist position defended by Ahmad ibn Hanbal during the Mihna: the Qur'an, as God's speech (kalâm Allâh), is an eternal attribute of His essence and therefore cannot be a creature that appeared in time.^[34] But where the strictest traditionalists contented themselves with affirming this point without discussion — in the very name of refusing to speculate — al-Ash'ari constructs a rational argument for this uncreatedness, distinguishing the eternal divine speech (attribute of essence) from its created manifestation in time, namely the sounds, letters and ink of the recited or copied Qur'anic text. This technical distinction allows him to hold simultaneously that the Qur'an-as-God's-speech is uncreated, while recognizing that its audible recitation or its material transcription belong, for their part, to the created world.^[35]

The theory of kasb: between determinism and freedom

The third pillar of Ash'arite doctrine touches on a question as old as theology itself: who, God or man, is the author of human acts? The Mu'tazilites, in order to ground moral responsibility and the justice of divine punishment, maintained that man really creates his own acts through a power (qudra) proper to him.^[36] A section of the traditionalists, conversely, leaned toward an integral determinism in which God alone acts, man being only a passive instrument of His decree.^[37]

Al-Ash'ari develops a middle position that has remained famous under the name of kasb (literally "acquisition"): God alone creates the act, in its complete ontological reality, but man "acquires" it through his own will and capacity, which suffices to ground his moral responsibility without making him a second creator alongside God.^[38] The formula seeks to preserve two requirements at once: absolute divine omnipotence — nothing happens in the universe without God creating it directly — and a real, though secondary and derived, form of human responsibility.

This solution provoked, from the following generations onward, intense internal debates about its exact intelligibility: what does it mean to "acquire" an act that one has not oneself created? Later Ash'arite commentators, from al-Bâqillânî to Fakhr al-Dîn al-Râzî, would propose successive refinements without ever fully resolving the difficulty — a Western philosopher will readily recognize in it a kinship of problem with the Christian debates on efficacious grace and free will, though within a very different metaphysical framework.^[39]

A world of atoms recreated at every instant

The theory of kasb rests on a particular physics which the Ash'arites, following al-Ash'ari, would develop in depth: the world is composed of atoms devoid in themselves of any stable quality, bearing accidents (colour, weight, motion, duration) which God alone creates and recreates, instant after instant, without any created thing having any causal power of its own over another.^[40] There is, within this framework, no natural causality in the sense understood by Aristotelian physics or Christian scholastic philosophy: fire does not "burn" through a power proper to it, but because God creates, at each instant and through a constant habit which He could suspend, the accident of combustion at the same time as the contact of fire and fuel.

This doctrine, which historians of philosophy call (atomist) occasionalism, would become a major distinctive feature of classical Ash'arite kalâm, taken up and systematized later by al-Ghazâlî in his famous critique of the causal necessity of the philosophers (falâsifa) heirs of Aristotle.^[41] Its theological function is to guarantee, against every form of philosophical naturalism, God's immediate omnipotence over every particle of creation, at every instant.

The beatific vision and the question of faith

On the last point of his proclamation of rupture — the possibility of seeing God in Paradise — al-Ash'ari defends, against the Mu'tazilite negation in the name of divine incorporeality, that believers will really see God in the afterlife, without this vision implying any place, direction, or assignable corporeal modality — once again according to the principle of bilā kayfa.^[42] On faith, finally, he holds, with the Sunni majority, that faith (îmân) consists essentially in inner assent (tasdîq) to revealed truth, a position that distances him both from the Kharijites — for whom grave sin excludes one from the status of believer — and from certain purely outward and legalistic readings of faith.

A difficult reception at first

Contrary to the image of an immediate triumph conveyed by certain simplified presentations of the history of Ash'arism, the new school took time to establish itself.^[43] The strictest Hanbali circles in Baghdad, suspicious of any theology employing kalâm whatever its conclusions, long continued to regard al-Ash'ari's disciples with suspicion, even open hostility.^[44] The theologian died, moreover, without having seen his school triumph: it was his second- and third-generation disciples who ensured its lasting spread.^[45]

Contemporary historiography: the thesis of George Makdisi

The scholar of Islam George Makdisi, in two foundational articles published in the journal Studia Islamica in 1962 and 1963, strongly qualified the traditional narrative of an early and linear "triumph" of Ash'arism in Baghdad.^[46] According to his analysis, the Ash'arite school met, in the 10th and early 11th century, with real difficulties in establishing itself in Baghdad itself, where Hanbali opposition long remained strong; its lasting spread and its recognition as the quasi-official theology of Sunnism were in fact played out later and elsewhere, notably in Damascus under the Seljuks and the Zengids, carried by teaching institutions such as the Nizamiyya madrasas.^[47] This historiographical rereading, itself now debated and qualified in turn by more recent works, illustrates a point of method that encyclopedic rigor requires be honestly noted: the narrative of a rapid and linear Ash'arite success, often presented as self-evident, remains in reality a subject of scholarly debate.

The Ash'arite triumph: Bâqillânî, Juwaynî, Ghazâlî

The effective spread of Ash'arism owes much to three generations of disciples who systematized and deepened its doctrine. Abû Bakr al-Bâqillânî (d. 403 AH / 1013) consolidated the school's argumentative apparatus against the Mu'tazilites and the philosophers. Abû al-Ma'âlî al-Juwaynî, known as Imâm al-Haramayn (d. 478 AH / 1085), master at Nishapur and then at Mecca and Medina, gave it an influential pedagogical synthesis. His own disciple, Abû Hâmid al-Ghazâlî — to whom Ignispedia devotes a dedicated article, Al-Ghazali — completed, at the turn of the 12th century, the fusion of Ash'arite theology, measured Sufism, and philosophical critique of the falâsifa, giving the school its most lastingly influential form in the Sunni world.^[48] On this basis, Ash'arism became the reference theology of the Shafi'i legal school to which al-Ash'ari himself belonged, and also won over a large part of Maliki circles.

The rival from Samarkand: Maturidism

A little to the east, in the same generation as al-Ash'ari, another theologian independently built a comparable synthesis: Abû Mansûr al-Mâturîdî of Samarkand, whom Ignispedia treats in a dedicated article, Al-Maturidi. The two schools — Ash'arite and Maturidi — came to share, with the third traditionalist path known as atharite (close to Hanbalism), the whole of the classical Sunni theological landscape, without their divergences ever having been considered, by the majority tradition, as a matter of mutual heresy.^[49] The two schools diverge notably on the degree of confidence to place in natural reason alone: the Maturidis hold, more than the Ash'arites, that unaided intellect can already discern certain ethical truths and the existence of a Creator.^[50]

Reading the table: the four currents share the essentials of Qur'anic monotheism, but diverge on the legitimate theological method and on how to reconcile divine omnipotence with human responsibility — a debate structurally analogous, on this latter point, to the Christian controversies on grace and free will, albeit within an entirely different metaphysical framework.^[51]

Persistent tensions with Hanbalism

The easing of relations with Hanbalism remains partial and temporary. Nearly four centuries later, the Hanbali theologian Ibn Taymiyya (1263–1328) composed at Damascus his Dar' ta'ârud al-'aql wa-l-naql ("Averting the Contradiction between Reason and Tradition"), a treatise aimed by name at Fakhr al-Dîn al-Râzî, one of the great late Ash'arite heirs, and rejecting in forty-four arguments the rule according to which philosophical reason should, in case of apparent conflict, prevail over the obvious sense of the revealed texts.^[52] This tension between the majority Ash'arite current and the Hanbali-Atharite traditionalist current, reactivated in the contemporary period by certain reformist and Salafi movements claiming Ibn Taymiyya against the Ash'arite heritage, still runs through Sunni Islam today.

The testament toward the people of the qibla

Al-Ash'ari died at Baghdad in 324 of the Hijra (936), after a quarter-century devoted to combating through doctrinal controversy those he judged to be in error.^[53] Yet the biographical tradition — transmitted notably by Ibn 'Asâkir and taken up by the great traditionalist and theologian al-Bayhaqî (d. 458 AH / 1066) — records from him, at the point of death, a word of appeasement strikingly at odds with decades of polemic:^[54]

"Bear witness that I do not declare an unbeliever any of those who turn toward the Qibla." — words attributed to al-Ash'ari on his deathbed, reported by Ibn 'Asâkir and al-Bayhaqî^[55]

This formula — refusing to excommunicate (takfîr) anyone who professes Islam, whatever their internal doctrinal divergences — became a principle of moderation widely invoked in the later Sunni tradition, including by currents very distant from Ash'arism on the doctrinal plane. It contrasts, it should be noted, with the severity of his youthful proclamation against his former Mu'tazilite masters: twenty-five years of controversy seem to have refined, in him, the distinction between combating doctrines judged erroneous and excluding the persons who profess them from the community of believers.

A tomb in Baghdad

According to the classical biographical tradition, al-Ash'ari was buried at Baghdad, in the area situated between the al-Karkh quarter and the Basra Gate (Bâb al-Basra), not far from other great scholarly figures of the Abbasid capital.^[56] No source reports any precisely surviving location today, the successive urban and political upheavals of Baghdad having erased most of the funerary landmarks of that period.

Nearly eight centuries later, in the 18th century, the Indian reformer Shâh Walî Allâh al-Dihlawî retrospectively designated al-Ash'ari as the renewer (mujaddid) expected of the 3rd century of the Hijra — a late but significant recognition of the extent of his influence on the history of Sunni theology.^[57]

Kalâm taken seriously by Catholic Islamic studies scholars

It would be easy, from a hasty Christian perspective, to reduce Ash'arite theology to a mere object of exotic curiosity. That is not the choice made by several of the best Catholic Islamic studies scholars of the twentieth century. The Dominican Georges C. Anawati, together with Louis Gardet, devote the entire third part of their Introduction à la théologie musulmane : essai de théologie comparée (Paris, Vrin, 1948, preface by Louis Massignon) to a methodical comparison of the nature and method of kalâm with those of Christian theology — a demanding gesture of intellectual dialogue, refusing both contempt and easy confusion between the two disciplines.^[58] The Jesuit Richard McCarthy devoted a scholarly critical edition in 1953 to the two principal surviving treatises of al-Ash'ari; the Jesuit Michel Allard devoted an in-depth doctoral thesis to him in 1965 on the single question of the divine attributes.^[59] This scholarly work, carried out by Catholic religious in Catholic presses in Beirut, illustrates what a serious dialogue of reason with Islam can be: first understanding the opposing doctrine in all its internal coherence, before discussing it.

Occasionalism and secondary causality: a fundamental metaphysical disagreement

On the strictly philosophical level, however, Ash'arite theology collides with a fundamental disagreement with the Catholic theology of creation as systematized by Saint Thomas Aquinas. The Catechism of the Catholic Church teaches that God, the first and transcendent cause of all that exists, does not thereby abolish the dignity of secondary causes: "Far from diminishing the dignity of the creature, this truth enhances it" (CCC §308).^[60] Fire truly burns through a causal power that properly belongs to it, although received and sustained at every instant by divine concurrence; the creature is not a mere screen behind which God alone would act.

Ash'arite occasionalism, conversely, denies any real secondary causality between creatures: only God acts, directly, at every instant, with nothing created exercising any causal power of its own. This disagreement is not a peripheral technical detail: it concerns the very conception of what a creature is — a being endowed with a consistency and activity of its own for Thomist theology, a pure theater of accidents recreated by God for classical Ash'arite occasionalism. Catholic theology, in defending the reality of secondary causes, intends precisely to honor the greatness of the Creator more, not less — He who is capable of giving His creature a genuine capacity to act without being diminished by it.

The beatific vision: a shared word, a very different content

One last parallel deserves mention, with the caution it requires. Al-Ash'ari, as we have seen, affirms that believers will see God in Paradise, without assignable modality. Catholic theology likewise speaks of the beatific vision: "Those who die in God's grace and friendship [...] see God 'face to face,' 'as he is'" (CCC §1023, citing 1 Cor 13:12 and 1 Jn 3:2).^[61] The vocabulary is similar; the theological content diverges profoundly. The Catholic beatific vision belongs to a theology of deifying grace and participation in God's Trinitarian life through Christ — man is rendered fit, by a gratuitous gift that raises him above his nature, to contemplate the divine essence itself. There is nothing comparable, in Ash'arite doctrine, to this dimension of divinization by grace: the vision it affirms remains conceived within the strict framework of a unitary monotheism without Trinitarian mediation or Incarnation, two points on which the Islam and the Catholic response dossier develops the full argument.

• Muhammad (c. 570–632) — the life of the prophet of Islam, claimed by the entire theological tradition that al-Ash'ari systematized.
• Islam and the Catholic response — the overarching doctrinal dossier on the Qur'an, Qur'anic Christology, and the Catholic apologetic response.
• What does the Church say about Islam? — the contemporary magisterial position, from Vatican II to the Catechism.
• Al-Ghazali (1058–1111) — the great heir of the Ash'arite school, who brought its synthesis with Sufism to completion.
• Al-Maturidi (853–944) — the contemporary founder of the other great theological school of classical Sunnism.
• Ahmad ibn Hanbal (780–855) — the traditionalist whose resistance to the Mihna prepared the climate in which al-Ash'ari's break with Mu'tazilism took place.
• Ibn Taymiyya (1263–1328) — the Hanbalite theologian whose critique of Ash'arite kalâm reopened, three centuries later, the debate over the legitimacy of rational theology in Islam.