In April 2026, Wissam Saadé delivered four lectures at the University of Bologna. The first, given at the invitation of Professor Giovanni Giorgini and entitled “The Prophet and the Philosopher: The Hierarchy of Knowledge between Avicenna’s Falsafa and al-Kirmānī’s Ismaʿili Neoplatonism,” is presented here in a revised and expanded version, published as a series of ten articles. This series explores the intellectual landscape of Islamic Neoplatonism through a comparative reading of Avicenna and al-Kirmānī. While both thinkers share a broadly Neoplatonic horizon, shaped by a metaphysics of emanation, a hierarchy of being, and a synthesis of Aristotelian and Platonic thought, they develop distinct philosophical projects: Avicenna within the tradition of Peripatetic falsafa, and al-Kirmānī within the framework of Ismaili theology. Despite these different intellectual contexts, their systems remain engaged in an ongoing dialogue concerning the nature of knowledge, the relationship between reason and revelation, and the ascent of the soul. Their respective projects also embody contrasting conceptions of the political, illuminating different ways of understanding the place of philosophy in relation to authority, law, and the organization of the community. This article constitutes the fourth installment of this ten-part series. IV - No Room for Black Boxes: Avicenna and the Secularization of the Ismaili Project Avicenna grew up listening to Ismaili missionaries ( dā ʿ īs ) who visited his home in Bukhara; both his father and brother were followers of the Ismaili da ʿ wa and frequently discussed its philosophy, specifically the Sijistānian version centered on the duality of Intellect and Soul. While al-Kirmānī sought to transcend this duality by adapting the Farabian Decad to his concept of an utterly transcendent and inscrutable God, Avicenna aimed to overcome both the unknowability of God and the duality of Intellect and Soul altogether. For Avicenna, logic serves as the primary vehicle of salvation. He posits that the perfection of the soul consists in the perfection of the intellect: to fully “intellect” the structure of the universe is to achieve the ultimate goal of human existence. He argued that the potential intellect can reach conjunction ( ittiṣāl ) with the Active Intellect through a combination of formal logic and intellectual intuition ( ḥads ), bypassing the need for a living mediator such as the Imam. Furthermore, while Avicenna maintains that God is simple and unique, he asserts that the First Intellect can and does intellect the Originator. In fact, the entire process of emanation in the Avicennian system is triggered by the First Intellect’s act of knowing its Cause. In this framework, God is rendered “intelligible”, a concept al-Kirmānī would have found dangerously close to shirk , as it threatens the absolute, inscrutable transcendence of the Divine. Avicenna inherited more than a little from the “Ismaili philosophical project”. The notion that existence is not chaos, but rather an ascending ladder of Intellects, is a central pillar of the Ismaili project, specifically in al-Sijistānī and al-Nasafī. Avicenna took this hierarchy and transformed it from “missionary ranks” ( marātib da ʿ wiyya ) or “gnostic symbols” into logical necessities. For him, the system of the Ten Intellects is simultaneously “natural science” and “metaphysics”, much as it is for al-Kirmānī, for whom “nature” is itself “metaphysics”. The Ismaili project centers on the “salvation of the soul” through knowledge, and Avicenna placed this axis at the very heart of his philosophy. His work on the “Soul” is not merely a medical or biological inquiry; it is a study of the “alienation of the soul” and its struggle to return to its celestial realm, as expressed in his famous Ode on the Soul . This “cosmic nostalgia” is a direct echo of the Ismaili spirituality in which he was raised. Ultimately, Avicenna “secularized” the Ismaili project. He took the skeletal structure of Ismaili metaphysics, the Intellects, Souls, Spheres, and hierarchies, and stripped away the secretive, exclusive character tied to the Imam, making it accessible to any human mind possessing intellectual intuition ( ḥads ) and logic. He replaced esoteric interpretation ( ta ʾ wīl ) with Aristotelian demonstration ( burhān ). Yet, in doing so, he was founding a new “philosophical religion” in his own way, one more confident and strategically grounded than even that of al-Fārābī. Al-Fārābī viewed the Prophet primarily through a political lens, identifying him as the “Supreme Ruler” who employs the faculty of imagination to translate abstract philosophical truths into a language accessible to the masses. In contrast, Avicenna argued that the Prophet possesses an extraordinary “intellectual intuition” ( ḥads ), which allows him to connect with the Active Intellect instantaneously, bypassing the need for discursive study. By framing prophecy as a natural, albeit rare, intellectual faculty, Avicenna effectively integrated “religion” into the domain of “science”. Religion was thus refashioned as a specialized branch of psychology, positioning the philosopher as the ultimate judge of its validity. Within this framework, the philosopher no longer requires a politeia , as in al-Fārābī, or an imperial da ʿ wa , as in Ismailism, to achieve salvation. Instead, salvation is transformed into an internal, cognitive event: the “return” of the alienated soul to its source through the autonomous power of the ʿ aql . For Avicenna, if philosophy was to replace the Imam or the da ʿ wa as the source of ultimate truth, it had to be self-sufficient. He wanted to prove God’s existence using logic alone, without relying on “signs”, “revelation”, or even the physical world and its motion. Al-Kirmānī’s God is an “inscrutable mystery” ( ghayb al-ghuyūb ), beyond existence and non-existence. This creates a “gap” that only an Imam or a secret ta ʿ līm can bridge. Avicenna, by contrast, leaves no room for black boxes: his universe is entirely transparent to the intellect. By proving God’s existence as a logical necessity, Avicenna ensured that the human intellect could, in theory, understand the entire chain of being. The Burhān al-Ṣiddīqīn The Burhān al-Ṣiddīqīn (the “Proof of the Truthful”) is one of the most sophisticated and influential demonstrations for the existence of God in the history of Islamic philosophy. Formulated and named by Avicenna in his Ishārāt wa-l-Tanbīhāt , it was explicitly distinguished from earlier theological arguments of the mutakallimūn , which depend on the createdness of the world ( ḥudūth al- ʿ ālam ), as well as from the arguments of the natural philosophers, which rely on motion and physical causality. Avicenna’s ambition was to construct a proof that begins not from the world as effect, but from existence itself as such. The Qur’anic horizon of this argument is often associated with the verse: “We shall show them Our signs in the horizons and within themselves until it becomes clear to them that it is the Truth” (Q 41:53): سَنُرِيهِمْ آيَاتِنَا فِي الْآفَاقِ وَفِي أَنفُسِهِمْ حَتَّىٰ يَتَبَيَّنَ لَهُمْ أَنَّهُ الْحَقُّ alongside the affirmation that divine witnessing is sufficient as proof. Classical interpretations distinguish between two modes of demonstration: the burhān al-āfāq (argument from the external world), which infers the Creator from created things, and the burhān al-ṣiddīqīn , which proceeds directly from existence itself to the Necessary Existent ( wājib al-wujūd ), without passing through contingent beings or cosmological motion. Necessary and Contingent Existence At the core of Avicenna’s argument lies the ontological distinction between necessary and possible existence. The beings we observe are contingent: they come into being and pass away, which indicates that their existence is not self-sufficient but requires a determinant that tips the balance between being and non-being. If every contingent being required another contingent being ad infinitum , no actual existence would ever be secured. An infinite regress of causes is therefore impossible as an explanatory structure. The chain of contingency must terminate in a being whose existence is necessary in itself, whose essence is identical with existence. This is the Necessary Existent, God. This metaphysical move is reinforced by Avicenna’s famous thesis that existence is an accident (ʿ araḍ ) that supervenes upon essence. In the case of contingent beings, essences are in themselves indifferent to existence or non-existence; existence is therefore something bestowed from outside. This conceptual distinction allows Avicenna to articulate a radical form of ontological dependence: essences “receive” existence from the Necessary Existent, which alone exists through itself. The world is thus composed of quiddities awaiting existence, while God is pure existence without quiddity. In this framework, God is the giver of being ( wāhib al-wujūd ), and existence becomes a metaphysical “overflow” or emanation upon essences otherwise immersed in non-being. However, this doctrine was sharply criticized by Averroes (Ibn Rushd), who rejected the notion that existence is an accident added to essence. For him, such a separation is purely conceptual and has no reality outside the mind. To ask how existence “attaches” to an essence is, in his view, a category mistake: nothing exists prior to existence such that existence could be added to it. Against Avicenna, Averroes insists that the being of a thing is identical with its essence in reality. His critique of Avicenna’s “accidentalization” of existence is thus a defense of ontological unity against what he saw as unnecessary abstraction. Emanation and the Hierarchy of Intellects The debate extends into cosmology through the shared but differently interpreted doctrine of emanation. Avicenna formulates the principle that “from the One only one can proceed”. From the Necessary Existent emerges the First Intellect, which in turn produces a triadic structure through self-intellection: knowledge of the First Principle, knowledge of itself as necessary, and knowledge of itself as contingent. This cascade continues through a hierarchy of ten intellects, culminating in the Active Intellect ( al- ʿ aql al-fa ʿʿ āl ), which governs the sublunary world. This cosmological architecture integrates metaphysics with astronomy: each celestial sphere is associated with an intellect and a soul. The soul of each sphere is responsible for its motion, conceived not mechanically but as a form of desire or aspiration toward perfection. Thus, the entire cosmos becomes an intelligible hierarchy of intellects, souls, and bodies. Averroes, by contrast, reorients this metaphysical system toward a more strictly Aristotelian framework. He rejects the need for multiple intermediary intellects and reasserts the primacy of physical motion as the starting point of demonstration. His proofs for God are grounded in nature itself: the argument from providence ( dalīl al- ʿ ināya ), which observes the ordered suitability of the world for life, and the argument from invention ( dalīl al-ikhtirā ʿ), which points to the structured complexity of living beings that cannot be explained by chance alone. The ultimate cause is the Unmoved Mover, inferred from the reality of eternal motion in the heavens. Avicennian and Ismaili Cosmologies Within this broader intellectual landscape, the doctrine of the ten intellects becomes a shared yet contested structure across Avicennian and Ismaili thought. Both systems assume that divine transcendence requires mediation: God does not govern the world directly but through a hierarchy of immaterial intellects. Both also associate the number ten with a complete cosmological architecture, in which the tenth intellect, the Active Intellect, governs the sublunary realm. In this sense, cosmology is simultaneously metaphysical and epistemological: it explains both the structure of the universe and the conditions of human knowledge. A further convergence appears in the role of the Active Intellect as the mediator between the intelligible and human cognition. It is the source of forms, the principle that actualizes the human intellect, and the condition of philosophical knowledge. In Avicenna, this access remains open to the philosopher through intellectual intuition. In Ismaili thought, particularly in Ḥamīd al-Dīn al-Kirmānī, it becomes structurally linked to the figure of the Imam, who embodies and transmits its meaning within a hierarchical order of knowledge. What emerges from this comparative framework is not merely a disagreement over proofs of God, but a deeper divergence over the structure of reality itself: whether existence is fundamentally analogical or identical, whether mediation is a metaphysical necessity or an interpretive overlay, and whether philosophy culminates in autonomous intellectual intuition or in a hierarchically organized order of revealed meaning.