This identity of the subjective and objective, which is present in the active understanding—while finite things and mental states are respectively one separated from the other, because there the understanding is only in potentiality—is the highest point which speculation can reach: and in it Aristotle reverts to his metaphysical principles (p. 147), where he termed self-thinking reason absolute Thought, divine Understanding, or Mind in its absolute character. It is only in appearance that thought is spoken of as on a level with what is other than thought; this fashion of bringing what is different into conjunction certainly appears in Aristotle. But what he says of thought is explicitly and absolutely speculative, and is not on the same level with anything else, such as sense-perception, which has only potentiality for thought. This fact is moreover involved, that reason is implicitly the true totality, but in that case thought is in truth the activity which is independent and absolute existence; that is, the thought of Thought, which is determined thus abstractly, but which constitutes the nature of absolute mind explicitly. These are the main points which are to be taken note of in Aristotle with regard to his speculative ideas, which it is impossible for us, however, to treat in greater detail. We have now to pass on to what follows, which is a practical philosophy, and in doing so we must first establish firmly the conception of desire, which is really the turning round of thought into its negative side, wherein it becomes practical. Aristotle (De Anima, III. 7 and 6) says: “The object of knowledge and active knowledge are one and the same; what is in potentiality is in the individual prior in point of time, although not so in itself. For all that comes into being originates from that which operates actively. The object perceived by sense appears as that which causes the faculty of perception in potentiality to become the faculty of perception in actuality, for the latter is not receptive of influence, and does not undergo change. On that account it has a different kind of movement from the ordinary, for movement, as we have seen (p. 163) is the activity of an unaccomplished end (ἐνέργεια ἀτελοῦς); pure activity (ἁπλῶς ἐνέργεια), on the contrary, is that of the accomplished end (τοῦ τετελεσμένον).”—“The simple thoughts of the soul are such that in regard to them there can be no falsity; but that in which there is falsity or truth is a combination of thoughts as constituting one conception; for example, ‘the diameter is incommensurate.’ Or if by mistake white has been stated to be not white, not-white has been brought into connection with it. All this process may, however, just as well be termed separation. But that which makes everything one is reason, which in the form of its thinking thinks the undivided in undivided time and with the undivided action of the soul.”—“Sense-perception resembles simple assertion and