it, the concept of motion (as alteration of place), is only possible through and in the representation of time that if this representation were not a priori (inner) intuition, then no concept, whatever it might be, could make comprehensible the possibility of an alteration,.e., of a combination of contradictorily opposed predicates (e.g., a thing's being in a place and the not being of the very same thing in the same place) in one and the same object.a Only in time can both contradictorily opposed determinations in one thing be encountered, namely succes sively.