In the twenty-four chapters of his Book on the Science of Metaphysics ‘Abd al-Latif paraphrases and summarizes a sort of “library” of treatises on metaphysics (Zimmermann 1986) which were assimilated in the formative period of falsafa and imposed themselves to the point of becoming canonical. The editorial plan of the Book on the Science of Metaphysics follows the ordering of the metaphysical and divine science according to al-Farabi’s Enumeration of the Sciences. It consists in fact of three distinct parts which reflect al-Farabi’s tripartite division: in the first part, which includes the first four chapters, there is the study of beings and their accidents; the second part, which goes from chapter five to chapter twelve, deals with the principles of definition and demonstration; the third and last part, comprising chapters thirteen to twenty-four, is devoted to a description of the hierarchy of the immaterial and intelligible realities until it reaches the First Mover, the First Principle, the First Cause, the One, which is nothing but the one God of the Koran, the provident Creator, in a synthesis of Aristotelian metaphysics, Neoplatonic metaphysics, and Islamic monotheism (Neuwirth 1976).