Descartes proceeds from the Notion of God to what is created, to thought and extension, and from this to the particular. “Now substances have several attributes without which they cannot be thought”—that signifies their determinateness—“but each has something peculiar to itself which constitutes its nature and essence”—a simple universal determinateness—“and to which the others all relate. Thus thought constitutes the absolute attribute of mind,” thought is its quality; “extension is” the essential determination of corporeality, and this alone is “the true nature of body. What remains are merely secondary qualities, modes, like figure and movement in what is extended, imagination, feeling and will in thinking; they may be taken away or thought away. God is the uncreated, thinking substance.”[184] Descartes here passes to what is individual, and because he follows up extension he arrives at matter, rest, movement. One of Descartes’ main points is that matter, extension, corporeality, are quite the same thing for thought; according to him the nature of body is fulfilled in its extension, and this should be accepted as the only essential fact respecting the corporeal world. We say that body offers resistance, has smell, taste, colour, transparency, hardness, &c., since without these we can have no body. All these further determinations respecting what is extended, such as size, rest, movement, and inertia, are, however, merely sensuous, and this Descartes showed, as it had long before this been shown by the Sceptics. Undoubtedly that is the abstract Notion or pure essence, but to body or to pure existence, there likewise of necessity pertains negativity or diversity. By means of the following illustration Descartes showed that with the exception of extension, all corporeal determinations may be annihilated, and that none can be absolutely predicated. We draw conclusions respecting the solidity and hardness of matter from the resistance which a body offers to our disturbance, and by means of which it seeks to hold its place. Now if we admit that matter as we touch it always gives way to us like space, we should have no reason for ascribing to it solidity. Smell, colour, taste, are in the same way sensuous qualities merely; but what we clearly perceive is alone true. If a body is ground into small parts, it gives way, and yet it does not lose its nature; resistance is thus not essential.[185] This not-being-for-itself is however a quantitatively slighter resistance only; the resistance always remains. But Descartes desires only to think; now he does not think resistance, colour, &c., but apprehends them by the senses only. Hence he says that all this must be led back to extension as being special modifications of the same. It is undoubtedly to the credit of Descartes that he only accepts as true what is thought; but the abrogation of these sensuous qualities simply represents the negative