But in the name of what principle can Comte discern what is and what is not “beyond the reach of science?” In order to justify a distinction of this kind should he not before everything begin by a criticism of the human mind, that is to say by a theory of knowledge similar to that proposed by Kant in his “Criticism of Pure Reason”? M. Renouvier endeavours to show that, through the absence of this preliminary criticism, with which Comte dispensed, his philosophy remains superficial. Mr. Max Muller expressly says that there is no need to take into account a philosophical doctrine which proceeds as if the “Criticism of Pure Reason” had not been written.

On the whole the objection reduces itself to reproaching Comte with not having attempted to do what he considered to be impracticable: namely, not to have determined the intellectual laws by the analysis of the mind reflecting upon itself. But, it is said, by what right does he affirm that this is impossible? Because, like all the others, these laws can only be discovered by means of the observation of facts, and because the only method which is suitable for the discovery of intellectual facts is the sociological method: the nature of these facts being such that, especially from the dynamic point of view, they can only be grasped in the evolution of humanity. The theory of knowledge demanded by M. Renouvier and Mr. Max Muller is not wanted in positive philosophy. It is not seen in this philosophy, because it is not presented in its traditional form. It is there none the less; but, instead of consisting in an analysis a priori of thought, as a preliminary to philosophy, it is not separated from the philosophy itself. It is one of the many aspects of sociology.

In the positive doctrine, as in all the others, there are dialectics—dialectics which are no longer abstract and logical, but real and historical. They do not seek to see the laws of the human mind through an effort at reflection in which the mind, beneath the phenomena, apprehends its very essence. They endeavour to discover these laws in the necessary sequence of periods which constitute the progress of the human mind. They, in their turn, study the “universal subject” whose forms, categories and principles have been determined by Kant a priori. But this universal subject is no longer reason grasping itself, so to speak, outside and above the conditions of time and of experience: it is the human mind becoming conscious of the laws of its activity through the study of its own past. Instead of the “absolute ego” of “impersonal reason,” or of the “conscience of the understanding,” positive philosophy analyses the intellectual history of humanity. It has then neither ignored nor neglected the problem. It has put it in new terms, and has been obliged to deal with it by a new method.

The critic is free to point out the defects of this method and the insufficiency of these terms. But, to reproach positive philosophy with not having dealt with the problem in the usual form in which it is taken by metaphysicians, and, for this reason, to put it aside unexamined, is to commit a kind of “petitio principii.” If Comte abstains from attempting an abstract theory of knowledge, he gives philosophical reasons for his refusal to do so. Before condemning him, it is but right to examine them. Had he done what M. Renouvier and Mr. Max Muller reproach him with having omitted, he would have contradicted himself. There would have been no reason for the existence of his system. He claimed to have reformed the very conception of philosophy: can we reproach him with the fact that his conception does not coincide with the view preferred by his adversaries? Briefly that which, according to Comte, characterises positive philosophy, is that it no longer requires for its constitution what in the judgment of M. Renouvier and Mr. Max Muller on the contrary, is indispensable. Are they or is he in the right? The question cannot evidently be solved by the mere affirmation of those interested. The examination of the doctrines themselves is necessary.

II.

The position taken by Comte may be briefly defined in a few words. Seeing that philosophy, such at least as it had been conceived until the XIX. century, could not assume the characteristics of science, he asks himself whether one would not succeed better by endeavouring to give the characteristics of science to philosophy. Like Kant, he might have compared the revolution he was attempting to that accomplished by Copernicus in astronomy, had he not preferred to present it as prepared and gradually brought about by the very “progress” of science and philosophy.

According to his own expression then he endeavours “to transform science into philosophy.” But on what conditions will the transformation be effected? If science were to lose in it its characteristics of positiveness, of reality, and of relativity, to assume those of a metaphysical doctrine, this change would be neither desirable nor possible. The transformation will simply consist in giving to science the philosophical character which it does not yet possess, namely universality. While thus acquiring a new property, positive science should lose none of those which it already possesses, and which constitute its value.

Thus, in the “transformation of science into philosophy,” what is transformed at bottom is not science which remains itself while becoming general from being special: it is philosophy rather which is transformed. The latter will henceforth undoubtedly be conceived as the highest and most comprehensive form of positive knowledge, but as constituting a part of that knowledge. It has been said that Comte does away with philosophy, by reducing it to being merely the “generalisation of the highest results of the sciences.” This is not a proper interpretation of his thought. Up to the present time the duties performed by the philosophical doctrines have been indispensable. Comte intends that his system shall fulfil them in future. Beside science properly so-called, which is always special, philosophy which represents the “point of view of the whole” must arise. On this condition alone can the government of minds and the “perfect logical coherence” become possible.

Philosophy will then not merely be a “generalisation of the highest results of the sciences.” The synthesis of the sciences must be brought about according to a principle to which they will be all related. It must really be a “summing up of experience.” But if this philosophy thus coalesces with science it must also be real like it, and all real knowledge is necessarily positive and relative. In short, the distinction between science and philosophy implies no specific difference between these two kinds of speculation. On the contrary, there exists between them homogeneity of doctrine and unity of method.

Therein lies the novelty of Comte’s system. The question was, without leaving the scientific point of view, to discover a single universal conception of the whole of Reality as we find it in experience. The solution of this problem was found on the day when Comte created social science. For indeed, in the first place, sociology makes the positive method universal by extending it to the highest order of natural phenomena accessible to us. Moreover, once it is established as a special science, ipso facto it assumes the character of a universal science, and consequently of a philosophy. Under a certain aspect, sociology is the sixth and last of the fundamental sciences. Under another aspect it is the only science, since the other sciences may be regarded as great sociological facts, and since the whole of what is given to us is subordinated to the supreme idea of humanity.