III. In its return into itself, and its developed abiding by itself: the notion in and for itself.
The division of Logic now given, as well as the whole of the previous discussion on the nature of thought, is anticipatory: and the justification, or proof of it, can only result from the detailed treatment of thought itself. For in philosophy, to prove means to show how the subject by and from itself makes itself what it is. The relation in which these three leading grades of thought, or of the logical Idea, stand to each other must be conceived as follows. Truth comes only with the notion: or, more precisely, the notion is the truth of being and essence, both of which, when separately maintained in their isolation, cannot but be untrue, the former because it is exclusively immediate, and the latter because it is exclusively mediate. Why then, it may be asked, begin with the false and not at once with the true? To which we answer that truth, to deserve the name, must authenticate its own truth: which authentication, here within the sphere of logic, is given, when the notion demonstrates itself to be what is mediated by and with itself, and thus at the same time to be truly immediate. This relation between the three stages of the logical Idea appears in a real and concrete shape thus: God, who is the truth, is known by us in His truth, that is, as absolute spirit, only in so far as we at the same time recognise that the world which He created, nature and the finite spirit, are, in their difference from God, untrue.
[CHAPTER VII.]
FIRST SUB-DIVISION OF LOGIC.
THE DOCTRINE OF BEING.
84.] Being is the notion implicit only: its special forms have the predicate 'is'; when they are distinguished they are each of them an 'other': and the shape which dialectic takes in them, i.e. their further specialisation, is a passing over into another. This further determination, or specialisation, is at once a forth-putting and in that way a disengaging of the notion implicit in being; and at the same time the withdrawing of being inwards, its sinking deeper into itself. Thus the explication of the notion in the sphere of being does two things: it brings out the totality of being, and it abolishes the immediacy of being, or the form of being as such.
85.] Being itself and the special sub-categories of it which follow, as well as those of logic in general, may be looked upon as definitions of the Absolute, or metaphysical definitions of God: at least the first and third category in every triad may,—the first, where the thought-form of the triad is formulated in its simplicity, and the third, being the return from differentiation to a simple self-reference. For a metaphysical definition of God is the expression of His nature in thoughts as such: and logic embraces all thoughts so long as they continue in the thought-form. The second sub-category in each triad, where the grade of thought is in its differentiation, gives, on the other hand, a definition of the finite. The objection to the form of definition is that it implies a something in the mind's eye on which these predicates may fasten. Thus even the Absolute (though it purports to express God in the style and character of thought) in comparison with its predicate (which really and distinctly expresses in thought what the subject does not), is as yet only an inchoate pretended thought—the indeterminate subject of predicates yet to come. The thought, which is here the matter of sole importance, is contained only in the predicate: and hence the propositional form, like the said subject, viz. the Absolute, is a mere superfluity (cf. § 31, and below, on the Judgment).
Each of the three spheres of the logical idea proves to be a systematic whole of thought-terms, and a phase of the Absolute. This is the case with Being, containing the three grades of quality, quantity, and measure. Quality is, in the first place, the character identical with being: so identical, that a thing ceases to be what it is, if it loses its quality. Quantity, on the contrary, is the character external to being, and does not affect the being at all. Thus e.g. a house remains what it is, whether it be greater or smaller; and red remains red, whether it be brighter or darker. Measure, the third grade of being, which is the unity of the first two, is a qualitative quantity. All things have their measure: i.e. the quantitative terms of their existence, their being so or so great, does not matter within certain limits; but when these limits are exceeded by an additional more or less, the things cease to be what they were. From measure follows the advance to the second sub-division of the idea, Essence.