 Fârâbî does metaphysics, not by writing a commentary on Aristotle’s Metaphysics, but by trying to reconstruct Aristotle’s aims and demonstrative method and to write the book that Aristotle would have written had he been writing in Arabic for a largely Muslim readership. This is a part of Fârâbî’s approach to the “sciences of the ancients”, i.e., to Greek philosophy, mathematics, and medicine, with all their sub-disciplines. A brief summary follows but, for a fuller account, see  Supplement: Fârâbî’s project of reviving the sciences of the ancients.