Envisioning, with Aristotle, a series of separate intellects moving the various celestial spheres, Averroes, commenting on Aristotle, speaks of sublunar nature being actualized by stars’ heat, the stars’ heat being generated by the separate intellects, and these separate intellects as ultimately being moved by God (through the separate intellects’ desire for God, their final cause). As Averroes notes in the lines leading up to the preceding quote: