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). ACTION AND EXPERIENCING MAY BE SUBSUMED UNDER MOVEMENT, BUT CANNOT BE CONSIDERED AS SEPARATE CATEGORIES.