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But Spinozism does not furnish what it desires. It desires to afford an explanatory ground of the purposive connexion (which it does not deny) of the things of nature, and it merely speaks of the unity of the subject in which they all inhere. But even if we concede to it that the beings of the world exist in this way, such ontological unity is not therefore a unity of purpose, and does not make this in any way comprehensible. For this latter is a quite particular kind of unity which does not follow from the connexion of things (the beings of the world) in a subject (the original Being), but implies in itself reference to a cause which has Understanding; and even if we unite all these things in a simple subject, this never exhibits a purposive reference. For we do not think of them, first, as the inner effects of the substance, as if it were a cause; nor, secondly, of this cause as a cause producing effects by means of its Understanding. Without these formal conditions all unity is mere natural necessity; and, if it is ascribed as well to things which we304 represent as external to one another, blind necessity. But if we wish to give the name of purposiveness of nature to that which the schoolmen call the transcendental perfection of things (in reference to their proper being), according to which everything has in itself that which is requisite to make it one thing and not another, then we are only like children playing with words instead of concepts. For if all things must be thought as purposes, then to be a thing is the same as to be a purpose, and there is at bottom nothing which specially deserves to be represented as a purpose.

We hence see at once that Spinoza by his reducing our concepts of the purposive in nature to our own consciousness of existing in an all-embracing (though simple) Being, and by his seeking that form merely in the unity of this Being, must have intended to maintain not the realism, but the idealism of its purposiveness. Even this he was not able to accomplish, because the mere representation of the unity of the substrate cannot bring about the Idea of a purposiveness, even that which is only undesigned.

(2) Those who not only maintain the Realism of natural purposes, but also set about explaining it, believe that they can comprehend, at least as regards its possibility, a practical kind of causality, viz. that of causes working designedly; otherwise they could not undertake to supply this explanation. For to authorise even the most daring of hypotheses, at least the possibility of what we assume as basis must be certain, and we must be able to assure objective reality to its concept.

But the possibility of living matter cannot even be thought; its concept involves a contradiction because lifelessness, inertia, constitutes the essential305 character of matter. The possibility of matter endowed with life, and of collective nature regarded as an animal, can only be used in an inadequate way (in the interests of the hypothesis of purposiveness in the whole of nature), so far as it is manifested by experience in the organisation of nature on a small scale; but in no way can we have insight into its possibility a priori. There must then be a circle in the explanation, if we wish to derive the purposiveness of nature in organised beings from the life of matter, and yet only know this life in organised beings, and can form no concept of its possibility without experience of this kind. Hylozoism, therefore, does not furnish what it promises.

Finally, Theism can just as little establish dogmatically the possibility of natural purposes as a key to Teleology; although it certainly is superior to all other grounds of explanation in that, through the Understanding which it ascribes to the original Being, it rescues in the best way the purposiveness of nature from Idealism, and introduces a causality acting with design for its production.

But we must first prove satisfactorily to the determinant Judgement the impossibility of the unity of purpose in matter resulting from its mere mechanism, before we are justified in placing the ground of this beyond nature in a determinate way. We can, however, advance no further than this. In accordance with the constitution and limits of our cognitive faculties (whilst we do not comprehend even the first inner ground of this mechanism) we must in no wise seek in matter a principle of determinate purposive references; but no other way of judging of the origination of its products306 as natural purposes remains to us than that by means of a supreme Understanding as cause of the world. But this is only a ground for the reflective, not for the determinant Judgement, and can justify absolutely no objective assertion.

74. The reason that we cannot treat the concept of a Technic of nature dogmatically is the fact that a natural purpose is inexplicable

We deal with a concept dogmatically (even though it should be empirically conditioned) if we consider it as contained under another concept of the Object which constitutes a principle113 of Reason, and determine it in conformity with this. But we deal with it merely critically, if we consider it only in reference to our cognitive faculties and consequently to the subjective conditions of thinking it, without undertaking to decide anything about its Object. Dogmatic procedure with a concept is then that which is conformable to law for the determinant Judgement, critical procedure for the reflective Judgement.

Now the concept of a thing as a natural purpose is a concept which subsumes nature under a causality only thinkable through Reason, in order to judge in accordance with this principle about that which is given of the Object in experience. But in order to use it dogmatically for the determinant Judgement, we must be assured first of the objective reality of this concept, because otherwise we could subsume no natural thing under it. Again, the307 concept of a thing as a natural purpose is, no doubt, empirically conditioned, i.e. only possible under certain conditions given in experience, though not to be abstracted therefrom; but it is a concept only possible in accordance with a rational principle in the judgement about the object. Its objective reality, therefore (i.e. that an object in conformity with it is possible), cannot be comprehended and dogmatically established as such a principle; and we do not know whether it is merely a sophistical and objectively empty concept (conceptus ratiocinans), or a rational concept, establishing a cognition and confirmed by Reason (conceptus ratiocinatus).114 Therefore it cannot be dogmatically treated for the determinant Judgement, i.e. it is not only impossible to decide whether or not things of nature considered as natural purposes require for their production a causality of a quite peculiar kind (that acting on design); but the question cannot even be put, because the concept of a natural purpose is simply not susceptible of proof through Reason as regards its objective reality. That is, it is not constitutive for the determinant Judgement, but merely regulative for the reflective.

That it is not susceptible of proof is clear because (as concept of a natural product) it embraces in itself natural necessity, and at the same time (as purpose) a contingency of the form of the Object (in reference to the mere laws of nature) in the very same thing. Hence, if there is to be no contradiction here it must contain a ground for the possibility of the thing in nature, and also a ground of the possibility of this nature itself and of its308 reference to something which, not being empirically cognisable nature (supersensible), is therefore for us not cognisable at all. [This is requisite] if it is to be judged according to a different kind of causality from that of natural mechanism when we wish to establish its possibility. The concept of a thing, then, as a natural purpose, is transcendent for the determinant Judgement, if we consider the Object through Reason (although for the reflective Judgement it certainly may be immanent in respect of the objects of experience). Hence for determinant judgements objective reality cannot be supplied to it; and so it is intelligible how all systems that one may project for the dogmatic treatment of the concept of natural purposes and of nature itself [considered] as a whole connected together by means of final causes, can decide nothing either by objective affirmation or by objective denial. For if things be subsumed under a concept that is merely problematical, its synthetical predicates (e.g. in the question whether the purpose of nature which we conceive for the production of things is designed or undesigned) can furnish only problematical judgements of the Object, whether affirmative or negative; and we do not know whether we are judging about something or about nothing. The concept of a causality through purposes (of art) has at all events objective reality, and also the concept of a causality according to the mechanism of nature. But the concept of a causality of nature according to the rule of purposes,—still more of a Being such as cannot be given us in experience, a Being who is the original cause of nature,—though it can be thought without contradiction, yet is of no avail for dogmatic determinations. For, since it cannot be309 derived from experience, and also is not requisite for the possibility thereof, its objective reality can in no way be assured. But even if this could be done, how can I number among the products of nature things which are definitely accounted products of divine art, when it is just the incapacity of nature to produce such things according to its own laws that made it necessary to invoke a cause different from it?

75. The concept of an objective purposiveness of nature is a critical principle of Reason for the reflective Judgement