 2) For Themistius, the celestial body is in a place “not in accordance with the whole but with the parts” (secundum partes, LC 141F TC43), and Averroes explains that “It means in accordance with the spheres that the largest sphere contains”, and we should understand that Themistius skipped the five elements. Averroes interprets that the latter is the sphere of the fixed stars, which is not surrounded by anything else and the concavity of which surrounds everything. Moreover he refers to the “natural science” of his time that proved that there is a ninth sphere, the one of the daily motion, and if so, we can affirm that the motion of the latter is “the essential motion of the whole universe, orbis” (essentialiter, LC 141H T43).