 Chapter 10 of Book VIII (266a10–267b26) accomplishes the identification of this unmovable mover: It has no parts nor magnitude (megethos), it is not material, it exerts an infinite force. We face Aristotle’s statement that “nothing finite can produce motion for an infinite time” (266a12–13) and Isḥāq translated it faithfully: “nothing finite can move anything for an infinite time” (Aristotle, Ṭabīʻa [1964: 924]). Nevertheless M. Scot made a translation where he clarified the term “finite”: “a finite mover cannot produce motion for an infinite time” (LC 423C). The principle is followed by two statements: no finite magnitude can have infinite force, and no infinite magnitude can have finite force (Ross 1936: 721). The statements fostered an intense discussion in Averroes’ Long Commentary. Averroes, following Aristotle (266a15–23), shows the inconsistencies of supposing a finite mover causing motion for an infinite time (LC 426BG TC79). As for the second statement (266a26–b6), Averroes again follows Aristotle and says that a body or a corporeal power does not have an infinite action, therefore the mover with an infinite power is not a body (LC 426G).