For that which is intermediate between the two is in a sense both extremity and centre.For this reason there is another heavy and light; namely, water and air.But in our view the continent pertains to form and the contained to matter: and this distinction is present in every genus.Alike in the sphere of quality and in that of quantity there is that which corresponds rather to form and that which corresponds to matter.In the same way, among spatial distinctions, the above belongs to the determinate, the below to matter.The same holds, consequently, also of the matter itself of that which is heavy and light: as potentially possessing the one character, it is matter for the heavy, and as potentially possessing the other, for the light.It is the same matter, but its being is different, as that which is receptive of disease is the same as that which is receptive of health, though in being different from it, and therefore diseasedness is different from healthiness.
第54章（2 / 2）