If the purely empirical fact were held to constitute the credentials of the thought, then no doubt it would be indispensable to be able precisely to identify the 'idea' in the 'impression.'
And in order to make out, in his criticism of the metaphysical psychology, that the soul cannot be described as substantial, simple, self-same, and as maintaining its independence in intercourse with the material world, Kant argues from the single ground, that the several attributes of the soul, which consciousness lets us feel in experience, are not exactly the same attributes as result from the action of thought thereon. But we have seen above, that according to Kant all knowledge, even experience, consists in thinking our impressions—in other words, in transforming into intellectual categories the attributes primarily belonging to sensation.
Unquestionably one good result of the Kantian criticism was that it emancipated mental philosophy from the 'soul-thing,' from the categories, and, consequently, from questions about the simplicity, complexity, materiality, &c. of the soul. But even for the common sense of ordinary men, the true point of view, from which the inadmissibility of these forms best appears, will be, not that they are thoughts, but that thoughts of such a stamp neither can nor do contain truth.
If thought and phenomenon do not perfectly correspond to one another, we are free at least to choose which of the two shall be held the defaulter. The Kantian idealism, where it touches on the world of Reason, throws the blame on the thoughts; saying that the thoughts are defective, as not being exactly fitted to the sensations and to a mode of mind wholly restricted within the range of sensation, in which as such there are no traces of the presence of these thoughts. But as to the actual content of the thought, no question is raised.
Paralogisms are a species of unsound syllogism, the especial vice of which consists in employing one and the same word in the two premisses with a different meaning. According to Kant the method adopted by the rational psychology of the old metaphysicians, when they assumed that the qualities of the phenomenal soul, as given in experience, formed part of its own real essence, was based upon such a Paralogism. Nor can it be denied that predicates like simplicity, permanence, &c., are inapplicable to the soul. But their unfitness is not due to the ground assigned by Kant, that Reason, by applying them, would exceed its appointed bounds. The true ground is that this style of abstract terms is not good enough for the soul, which is very; much more than a mere simple or unchangeable sort of thing. And thus, for example, while the soul may be admitted to be simple self-sameness, it is at the same time active and institutes distinctions in its own nature. But whatever is merely or abstractly simple is as such also a mere dead thing. By his polemic against the metaphysic of the past Kant discarded those predicates from the soul or mind. He did well; but when he came to state his reasons, his failure is apparent.
48.] (ß) The second unconditioned object is the World (§ 35). In the attempt which reason makes to comprehend the unconditioned nature of the World, it falls into what are called Antinomies. In other words it maintains two opposite propositions about the same object, and in such a way that each of them has to be maintained with equal necessity. From this it follows that the body of cosmical fact, the specific statements descriptive of which run into contradiction, cannot be a self-subsistent reality, but only an appearance. The explanation offered by Kant alleges that the contradiction does not affect the object in its own proper essence, but attaches only to the Reason which seeks to comprehend it.
In this way the suggestion was broached that the contradiction is occasioned by the subject-matter itself, or by the intrinsic quality of the categories. And to offer the idea that the contradiction introduced into the world of Reason by the categories of Understanding is inevitable and essential, was to make one of the most important steps in the progress of Modern Philosophy. But the more important the issue thus raised the more trivial was the solution. Its only motive was an excess of tenderness for the things of the world. The blemish of contradiction, it seems, could not be allowed to mar the essence of the world: but there could be no objection to attach it to the thinking Reason, to the essence of mind. Probably nobody will feel disposed to deny that the phenomenal world presents contradictions to the observing mind; meaning by 'phenomenal' the world as it presents itself to the senses and understanding, to the subjective mind. But if a comparison is instituted between the essence of the world and the essence of the mind, it does seem strange to hear how calmly and confidently the modest dogma has been advanced by one, and repeated by others, that thought or Reason, and not the World, is the seat of contradiction. It is no escape to turn round and explain that Reason falls into contradiction only by applying the categories. For this application of the categories is maintained to be necessary, and Reason is not supposed to be equipped with any other forms but the categories for the purpose of cognition. But cognition is determining and determinate thinking: so that, if Reason be mere empty indeterminate thinking, it thinks nothing. And if in the end Reason be reduced to mere identity without diversity (see next §), it will in the end also win a happy release from contradiction at the slight sacrifice of all its facts and contents.
It may also be noted that his failure to make a more thorough study of Antinomy was one of the reasons why Kant enumerated only four Antinomies. These four attracted his notice, because, as may be seen in his discussion of the so-called Paralogisms of Reason, he assumed the list of the categories as a basis of his argument. Employing what has subsequently become a favourite fashion, he simply put the object under a rubric otherwise ready to hand, instead of deducing its characteristics from its notion. Further deficiencies in the treatment of the Antinomies I have pointed out, as occasion offered, in my 'Science of Logic' Here it will be sufficient to say that the Antinomies are not confined to the four special objects taken from Cosmology: they appear in all objects of every kind, in all conceptions, notions and Ideas. To be aware of this and to know objects in this property of theirs, makes a vital part in a philosophical theory. For the property thus indicated is what we shall afterwards describe as the Dialectical influence in logic.
The principles of the metaphysical philosophy gave rise to the belief that, when cognition lapsed into contradictions, it was a mere accidental aberration, due to some subjective mistake in argument and inference. According to Kant, however, thought has a natural tendency to issue in contradictions or antinomies, whenever it seeks to apprehend the infinite. We have in the latter part of the above paragraph referred to the philosophical importance of the antinomies of reason, and shown how the recognition of their existence helped largely to get rid of the rigid dogmatism of the metaphysic of understanding, and to direct attention to the Dialectical movement of thought. But here too Kant, as we must add, never got beyond the negative result that the thing-in-itself is unknowable, and never penetrated to the discovery of what the antinomies really and positively mean. That true and positive meaning of the antinomies is this: that every actual thing involves a coexistence of opposed, elements. Consequently to know, or, in other words, to comprehend an object is equivalent to being conscious of it as a concrete unity of opposed determinations. The old. metaphysic, as we have already seen, when it studied the objects of which it sought a metaphysical knowledge, went to work by applying categories abstractly and to the exclusion of their opposites. Kant, on the other hand, tried to prove that the statements, issuing through this method, could be met by other statements of contrary import with equal warrant and equal necessity. In the enumeration of these antinomies he narrowed his ground to the cosmology of the old metaphysical system, and in his discussion made out four antinomies, a number which rests upon the list of the categories. The first antinomy is on the question: Whether we are or are not to think the world limited in space and time. In the second antinomy we have a discussion of the dilemma: Matter must be conceived either as endlessly divisible, or as consisting of atoms. The third antinomy bears upon the antithesis of freedom and necessity, to such extent as it is embraced in the question, Whether everything in the world must be supposed subject to the condition of causality, or if we can also assume free beings, in other words, absolute initial points of action, in the world. Finally, the fourth antinomy is the dilemma: Either the world as a whole has a cause or it is uncaused.
The method which Kant follows in discussing these antinomies is as follows. He puts the two propositions implied in the dilemma over against each other as thesis and antithesis, and seeks to prove both: that is to say he tries to exhibit them as inevitably issuing from reflection on the question. He particularly protests against the charge of being a special pleader and of grounding his reasoning on illusions. Speaking honestly, however, the arguments which Kant offers for his thesis and antithesis are mere shams of demonstration. The thing to be proved is invariably implied in the assumption he starts from, and the speciousness of his proofs is only due to his prolix and apagogic mode of procedure. Yet it was, and still is, a great achievement for the Critical philosophy, when it exhibited these antinomies: for in this way it gave some expression (at first certainly subjective and unexplained) to the actual unity of those categories which are kept persistently separate by the understanding. The first of the cosmological antinomies, for example, implies a recognition of the doctrine that space and time present a discrete as well as a continuous aspect: whereas the old metaphysic, laying exclusive emphasis on the continuity, had been led to treat the world as unlimited in space and time. It is quite correct to say that we can go beyond every definite space and beyond every definite time: but it is no less correct that space and time are real and actual only when they are defined or specialised into 'here' and 'now,'—a specialisation which is involved in the very notion of them. The same observations apply to the rest of the antinomies. Take, for example, the antinomy of freedom and necessity. The main gist of itis that freedom and necessity as understood by abstract thinkers are not independently real, as these thinkers suppose, but merely ideal factors (moments) of the true freedom and the true necessity, and that to abstract and isolate either conception is to make it false.