This, the unconditioned, must now be grasped as concrete, and therein lies the main difficulty. For to know the unconditioned means to determine it and to deduce its determinations. Much has been written and said on the subject of knowledge, without a definition of it ever having been offered. But it is the business of Philosophy to see that what is taken for granted as known is really known. Now on this point Kant says that reason has certainly the desire to know the infinite, but has not the power. And the reason which Kant gives for this (Kritik der reinen Vernunft, pp. 277, 278), is on the one hand that no psychologically sensuous intuition or perception corresponds with the infinite, that it is not given in outward or inward experience; to the Idea “no congruent or corresponding object can be discovered in the sensuous world.” It depends, however, on how the world is looked at; but experience and observation of the world mean nothing else for Kant than a candlestick standing here, and a snuff-box standing there. It is certainly correct to say that the infinite is not given in the world of sensuous perception; and supposing that what we know is experience, a synthesis of what is thought and what is felt, the infinite can certainly not be known in the sense that we have a sensuous perception of it. But no one wishes to demand a sensuous proof in verification of the infinite; spirit is for spirit alone. The second reason for considering that the infinite cannot be known, lies in this, that Reason has no part in it except as supplying the forms of thought which we call categories; and these doubtless afford what Kant calls objective determinations, but in such a way that in themselves they are still only subjective. If therefore for the determination of the infinite we employ these categories which are applicable only to phenomena, we entangle ourselves in false arguments (paralogisms) and in contradictions (antinomies); and it is an important point in the Kantian philosophy that the infinite, so far as it is defined by means of categories, loses itself in contradictions. Although reason, says Kant, becomes transcendent by the exhibition of these contradictions, it still retains its claim to trace perception, experience, and knowledge pertaining to the understanding, back to the infinite. This union of the infinite, the unconditioned, with the finite and conditioned as existing in the knowledge given by the understanding, or even in perception, would signify that the acme of concreteness had been reached.
Of this Unconditioned there are several kinds, objects having special features of their own and proceeding from reason, transcendental Ideas; they are thus themselves particular in their nature. The manner in which Kant arrives at these Ideas is again derived from experience, from formal logic, according to which there are various forms of the syllogism. Because, says Kant, there are three forms of the syllogism, categorical, hypothetical, and disjunctive, the Unconditioned is also three-fold in its nature: “Firstly, an Unconditioned of the categorical synthesis in a subject.” Synthesis is the concrete; but the expression is ambiguous, since it indicates an external association of independent elements. “In the second place, an Unconditioned of the hypothetical synthesis of the members of a series will have to be looked for; and in the third place, an Unconditioned of the disjunctive synthesis of the parts in a system.” We make the first connection, expressed as object of Reason or transcendental Idea, when we conceive “the thinking subject;” the second “is the sum total of all phenomena, the world;” and the third is “the thing which contains the supreme condition of the possibility of all that can be thought, the Being of all Beings,” i.e. God. When brought to an ultimate point, the question which meets us is whether Reason can bring these objects to reality, or whether they remain confined to subjective thought. Now, according to Kant, Reason is not capable of procuring reality for its Ideas—otherwise it would be transcendent, its limits would be overstepped; it produces only paralogisms, antinomies, and an ideal without reality.[343]
α. “A. paralogism is a syllogism false in its form.” Since Reason credits with reality that mode of the Unconditioned which constitutes the categorical synthesis in a subject, and therefore the thinking subject, it is termed substance. Now is the thinking ego a substance, a soul, a soul-thing? Further questions are whether it is permanent, immaterial, incorruptible, personal and immortal, and such as to have a real community with the body. The falsity of the syllogism consists in this, that the idea of the unity of the transcendental subject essential to Reason is expressed as a thing; for it is only in this way that the permanency of the same becomes substance. Otherwise I find myself permanent in my thought, of course, but only within perceiving consciousness, not outside of that. The ego is therefore the empty, transcendental subject of our thoughts, that moreover becomes known only through its thoughts; but of what it is in itself we cannot gather the least idea. (A horrible distinction! For thought is nothing more or less than the “in-itself” or implicit.) We cannot assert of it any present Being, because thought is an empty form, we have a conception of what thinking Beings are through no outward experience, but only by means of self-consciousness,—i.e. because we cannot take the “I” in our hands, nor see it, nor smell it. We therefore know very well that the ego is a subject, but if we pass beyond self-consciousness, and say that it is substance, we go farther than we are entitled to do. I cannot therefore assign any reality to the subject.[344]
We here see Kant fall into contradiction, what with the barbarity of the conceptions which he refutes, and the barbarity of his own conceptions which remain behind when the others are refuted. In the first place, he is perfectly correct when he maintains that the ego is not a soul-thing, a dead permanency which has a sensuous present existence; indeed, were it to be an ordinary thing, it would be necessary that it should be capable of being experienced. But, in the second place, Kant does not assert the contrary of this, namely that the ego, as this universal or as self-thinking, has in itself the true reality which he requires as an objective mode. For he does not get clear of the conception of reality in which reality consists in the possession of a sensuous present existence; accordingly, because the ego is given in no outward experience, it is not real. For self-consciousness, the ego as such, is not, according to Kant, reality; it is only our thought, or in other words he regards self-consciousness as being itself simply and entirely sensuous. The form which Kant accordingly bestows on Being, thing, substance, would seem to indicate that these categories of the understanding were too high for the subject, too high to be capable of being predicated of it. But really such determinations are too poor and too mean, for what possesses life is not a thing, nor can the soul, the spirit, the ego, be called a thing. Being is the least or lowest quality that one can assign to spirit, its abstract, immediate identity with itself; Being thus no doubt pertains to spirit, but it must be considered as a determination scarcely worth applying to it.
β. In the second place we have the antinomy, i.e. the contradiction in Reason’s Idea of the Unconditioned, an Idea applied to the world in order to represent it as a complete summing-up of conditions. That is to say, in the given phenomena Reason demands the absolute completeness of the conditions of their possibility, so far as these constitute a series, so that the unconditioned is contained in the world, i.e. the totality of the series. If now this completeness is expressed as existing, an antinomy is alone presented, and Reason is presented only as dialectic: i.e. in this object there is on every side a perfect contradiction found.[345] For phenomena are a finite content, and the world is a conjunction of the limited; if this content is now thought by Reason, and therefore subsumed under the unconditioned and the unlimited, we have two determinations, finite and infinite, which contradict each other. Reason demands a perfectly complete synthesis, an absolute beginning; but in phenomena we have, on the contrary, a succession of causes and effects, which never come to an end. Kant here points out four contradictions (Kritik der reinen Vernunft, p. 320), which, however, is not enough; for in each Notion there are antinomies, since it is not simple but concrete, and therefore contains different determinations, which are direct opposites.
αα. These antinomies in the first place involve our making the one determination, limitation, just as valid as non-limitation. “Thesis: The world has a beginning and an end in time, and it is limited in regard to space. Antithesis: It has no beginning and no end in time, and also no limits in space.” The one, says Kant, can be proved just as easily as the other; and indeed he does prove each indirectly, though his are not “advocate’s proofs.”[346] The world, as the universe, is the whole; it is thus a universal idea, and therefore unlimited. The completion of the synthesis in progression as regards time and space is, however, a first beginning of time and space. If therefore the categories of limited and unlimited are applied to the world in order to attain to a knowledge of it, we fall into contradictions, because the categories are not applicable to things-in-themselves.
ββ. The second antinomy is that atoms, from which substance is composed, must necessarily be admitted to exist, therefore simplicity can be proved; but just as easy is it to prove incompleteness, the endless process of division. The thesis is accordingly stated thus: “Every compound substance consists of simple parts,” and the antithesis is as follows: “There exists nothing simple.”[347] The one is here the limit, a material self-existence, the point which is likewise the enclosing surface; the other is divisibility ad infinitum.
γγ. The third antinomy is the opposition between freedom and necessity. The first is the self-determining, the point of view pertaining to infinity: causality according to the laws of freedom is the only causality. The other is: Determinism alone is to be found: everything is determined by means of an external ground or reason.[348]