To what genus could (movement) be reduced? It constitutes neither the being nor the quality of the (being) in which it exists. It is not even reducible to action, for in passion (or, experience) there are several kinds of movements; and it is the actions and passions which are reducible to movement. Further, movement need not necessarily be a relative merely because movement does not exist in itself, that it belongs to some being, and that it exists in a subject; otherwise, we should have to classify quality also as a relation; for quality belongs to some (being) and exists in a subject; it is not so however, with a quantity. It might be objected that, though each of them exist in some subject, the one by virtue of its being a quality, and the other, of being a quantity, they themselves are not any the less species of essences. The same argument would apply to movement; though it belong to some subject, it is something before belonging to a subject, and we must consider what it is in itself. Now what is relative is not at first something by itself, and then the predicate of something else;[416] but what is born of the relation existing between two objects, is nothing else outside the relation to which it owes its name; thus the double, so far as it is called doubleness, is neither begotten, nor exists except in the comparison established between it and a half, since, not being conceived of before, it owes its name and its existence to the comparison thus established. IS CHANGE ANTERIOR TO MOVEMENT?