 Ammonius, pupil of Proclus was also an important predecessor for Simplicius. Ammonius taught in Alexandria (around the second half of the fifth century) and famously argued that Aristotle’s Unmoved Mover is both a final and an efficient cause (Simplicius, In Cael. 271.13–21 and In Phys. 1360.24–1363.24). Such a reading of Aristotle, which Proclus still firmly opposes (In Parm. IV 842.20–27 [Steel], where he calls the Unmoved Mover agonos, i.e., not productive or infertile; see also Tempelis 1998: 134 n. 609), was an important step in combining the demiurge in Plato’s Timaeus with Aristotle’s self-thinking intellect (Metaphysics Lambda 6–7). Simplicius welcomes Ammonius’ innovation and, not surprisingly, refers to him with great approval (see In Phys. 1362.11–16 and Golitsis 2017a).