 The consideration of the entire Metaphysics, and the view of metaphysics as universal science, are the pivotal elements of the short introduction to the Metaphysics written by al-Fārābī, following the model of the Prolegomena of Greek Late Antiquity and the teaching of Ammonius Son of Hermeias and his Aristotelian school in Alexandria. This essay, On the Goals of the Sage [= Aristotle] in Each Treatise of the Book Marked by Means of Letters [= Metaphysics] (Maqāla … fī Aġrāḍ al-ḥakīm fī kull maqāla min al-kitāb al-mawsūm bi-l-ḥurūf), represents the first integral exegesis of the Metaphysics extant in Arabic and reveals al-Fārābī’s dependence on the epistemology of the newly translated Posterior Analytics. Fārābī’s use of a style of exegesis stemming from the Peripatetic tradition is a manifestation of his affiliation with the coeval school of Baghdad Aristotelians. The main point of the work is that metaphysics is more encompassing than, and not reducible to, the philosophical theology of book Lambda. Following this aim, al-Fārābī first rejects the attempts to interpret Aristotle’s work along Neoplatonic and monotheistic lines (in this he has probably in mind al-Kindī’s theologizing conception of metaphysics), and advocates a type of explanation akin to that of the Greek commentators (Alexander of Aphrodisias and Themistius). Then he derives from the universal nature of metaphysics, understood as the science having being qua being as its subject-matter, indications regarding its scope (it incorporates a part on philosophical theology, namely on the doctrine of the first causes of being), as well as on its oneness as an universal science (there cannot be more than one universal science), its name (by being more general than physics it is also “after” physics) and its overall content. Finally, he concludes with a brief description of each of the books of Aristotle’s work known to him, in which the content of book Lambda is summarized with no religious overtones. In this way, al-Fārābī extracts from Aristotle’s work a coherent and all-encompassing outline of an “ideal” science of metaphysics; this project will guide the following generations of Arabic metaphysicians, in particular Avicenna, to build a new science of metaphysics according to Farabian parameters.