Such are the objections that may be raised against those who consider all beings as corporeal; who wish to judge of their existence only by impressions they receive therefrom, and who try to found the certitude of truth on the images of sensation.[73] They resemble sleeping men who take as realities the visions they have in their dreams. Sensation is the dream of the soul;[52] so long as the soul is in the body, she dreams; the real awakening of the soul consists in genuine separation from the body, and not in rising along with the body. To rise with the body is to pass from one sleep into another kind; from one bed to another; really to awake is to separate oneself completely from the body. The body, whose nature is contrary to that of the soul, consequently has a nature contrary to that of "being." This is proved by the generation, flux, and decay of bodies, all processes contrary to the nature of "being." MATTER COMPARED TO A MIRROR WHICH REFLECTS EVERYTHING THOUGH REALLY EMPTY. 7. Let us return to matter as a substrate, and then to what is said to exist within it. This will lead us to see that it consists of nonentity, and that it is impassible. Matter is incorporeal because the body exists only as posterior thereto, because it is a composite of which it constitutes an element. It is called incorporeal because existence and matter are two things equally distinct from the body. Not being soul, matter is neither intelligence, nor life, nor ("seminal) reason," nor limit. It is a kind of infinity.[53] Neither is it an (active) power;[54] for what could it produce? Since matter is none of the above-mentioned things, it could not be called existence. It deserves only the name "nonentity" yet not even in the sense in which we may say that movement or rest are not existence;[55] matter is real nonentity. It is an image and phantom of extension, it is aspiration to a form of hypostatic existence. Its perseverance is not in rest (but in change). By itself, it is invisible, it escapes whoever wishes to see it. It is present when you do not look at it, it escapes the eye that seeks it. It seems to contain all the contraries: the large and small, the more and the less, the lack and excess.[56] It is a phantom equally incapable of remaining or escaping; for matter does not even have the strength of avoiding (form), because it has received no strength from intelligence, and it is the lack of all existence. Consequently, all its appearances are deceptions. If we represent matter as being greatness, it immediately appears as smallness; if we represent it as the more, we are forced to recognize it as the less. When we try to conceive of its existence, it appears as nonentity; like all the things it contains, it is a fugitive shadow, and a fleeting game, an image within an image. It resembles a mirror, in which one might see the reflections of objects external to it; the mirror seems to be filled,