the measure of the movements of the celestial sphere and similar things that actually exist. Both of these divisions amount to saying that an existent being is either in an actually existing place or time separate from it, or is not. This is a valid division. For if every existent being required an actually existing place and time separate from it, that existing place and time would themselves require another existing place and time separate from them. This entails an infinite regress if the further place or time is other than the original. If the original is meant instead, then regarding it as the cause leads to circularity. Otherwise, there is nothing impossible in regarding each of the two as time for the other, or calling it the other’s space.

But if by “space” he means something that does not exist separately from the spatially located being—whether something non-existent, something inhering in that being, a kind of relation, or something similar that an independently subsisting being cannot do without, or that a body cannot do without—then this is