 1) Averroes now faces a great question, magna quaestio, in relation to Phys. IV.5, 212a31–b3, a passage where Aristotle mentions the circular motion in the universe (his commentary, TC43, occupies LC 141C through LC 143C). We know that the outermost sphere moves with the daily rotation but “as a whole it does not simultaneously change its place, though it moves in a circle: for this place is the place of its parts”. Only their parts, the four elements, change place (Phys. 212b1). For this accidental reason, Aristotle grants it some kind of place. The Aristotelian passage remained obscure and discussions about the place of the universe arose.