HOW CAN MOVEMENT BE IN TIME, IF CHANGE BE OUTSIDE OF TIME?
16. It may be objected that movement is an imperfect actualization.[272] In that case actualization should be given the first rank; and under that genus would follow the species of movement, with the quality of imperfection, by saying that movement is an actualization, and adding (the specific difference) that it is imperfect. To say that movement is an imperfect actualization does not deprive it of being an actualization, but implies that though it be actualization, there is in it succession, not to arrive at being actualization, (which it is already), but to accomplish something from which it is yet entirely distinct. Then (when that goal is reached), it is not the movement that becomes perfect, but the thing which was the goal. For instance, walking is walking from the very first step; but if there be a mile to go, and the mile be not yet finished, what is lacking of the mile is not lacking to the walking or to movement (taken absolutely), but to that particular walk. For the walk was walking and movement from the very first step; consequently, he who is moving has already moved, and he who cuts has already cut.[273] Just as actualization, movement has no need of time; it needs time only to become such an action. If then actualization be outside of time, movement, taken absolutely, must also be outside of time. The objection that movement is in time because it implies continuity (proves too much; for in that case) intuition itself, if prolonged, would also imply continuity, and therefore would be in time. Reasoning by induction, it may be seen, 1, that one can always distinguish parts in any kind of movement; 2, that it would be impossible to determine when and since when the movement began, or to assign the definite point of departure; 3, that it is always possible to divide movement by following it up to its origin, so that in this manner movement that has just begun would find itself to have begun since infinite time, and, 4, that movement would be infinite in regard to its beginning. The fact is that the Aristotelians distinguish movement from actualization; they affirm that actualization is outside of time, but that time is necessary to movement; not indeed to some particular movement, but to movement in itself, because, according to their views, it is a quantity. Nevertheless, they themselves acknowledge that movement is a quantity only by accident, as, for instance, when it is a daily movement, or when it has some particular duration. Just as actualization is outside of time, nothing hinders movement from having begun outside of time, and time from being connected with movement only because the movement has a certain duration. Indeed, it is generally granted that changes occur outside of time, for it is usual to say, The changes occur either suddenly or successively. Now if change can occur outside of time, why should it not be so also with movement? We here speak of change, and not of "having changed;" for change does not necessarily have to be accomplished (while "having changed" signifies an accomplished fact, and consequently implies the notion of time).