19. Let us now examine if certain actualizations seem to be imperfect when they are not joined to time, thus identifying themselves with movements, as life identifies itself with living. For (according to the Aristotelians) the life of each (being) is accomplished in a perfect time, and happiness is an actualization; not an individual one, indeed, but a sort of movement.[277] Consequently we will have to call life and happiness movements, and movement will have to be made a genus, though recognizing that movement forms a genus very different from quantity and quality; and, like them, relates to being. This genus could be divided into two species, movements of body and movements of soul, or movements spontaneous and communicated; or again, movements proceeding from the beings themselves, or movements proceeding from others. In this case, the movements proceeding from the beings themselves are actions, whether they communicate to others, or remain absolute in themselves (and not communicating to others, like speaking and walking); and the movements proceeding from others are "reactions" though the communicated movements seem to be identical with the movements proceeding from others. For example, division is one and the same thing, whether it be considered within him who divides, or in that which is divided; nevertheless dividing is something different from being divided. Or again, division is not one and the same thing according as it proceeds from him who divides, or as it is received by him who is divided; to divide means to cause in the divided thing another movement, which is the result of the dividing action or movement. Perhaps, indeed, the difference does not lie in the very fact of being divided, but in the movement which results from the division, as for instance, in suffering; for this is what constitutes reaction (or "passion").