The system of the spirit.
If the forms of human activity are four, four also are the forms of genius. Men endowed with genius in art, in science, and in moral will or heroes, have always been recognized. But the genius of pure economicity has met with repugnance. It is not altogether without reason that a category of bad geniuses or of geniuses of evil has been created. The practical, merely economic genius, which is not directed to a rational end, cannot but excite an admiration mingled with alarm. To dispute as to whether the word "genius" should be applied only to creators of æsthetic expression or also to men of scientific research and of action would be a mere question of words. To observe, on the other hand, that "genius," of whatever kind it be, is always a quantitative conception and an empirical distinction, would be to repeat what has already been explained as regards artistic genius.
Non-existence of a fifth form of activity. Law; sociability.
A fifth form of spiritual activity does not exist. It would be easy to show how all the other forms either do not possess the character of activity, or are verbal variants of the activities already examined, or are complex and derivative facts, in which the various activities are mingled, and are filled with particular and contingent contents.
The juridical fact, for example, considered as what is called objective law, is derived both from the economic and from the logical activities. Law is a rule, a formula (whether oral or written matters little here) in which is fixed an economic relation willed by an individual or by a community, and this economic side at once unites it with and distinguishes it from moral activity. Take another example. Sociology (among the many meanings the word bears in our times) is sometimes conceived as the study of an original element, which is called sociability. Now what is it that distinguishes sociability, or the relations which are developed in a meeting of men, and not in a meeting of sub-human beings, if it be not just the various spiritual activities which exist among the former and which are supposed not to exist, or to exist only in a rudimentary degree, among the latter? Sociability, then, far from being an original, simple, irreducible conception, is very complex and complicated. A proof of this would be the impossibility, generally recognized, of enunciating a single law which could be described as purely sociological. Those that are improperly so called are shown to be either empirical historical observations, or spiritual laws, that is to say judgements into which the conceptions of the spiritual activities are translated, when they are not simply empty and indeterminate generalities, like the so-called law of evolution. Sometimes, too, nothing more is understood by "sociability" than "social rule," and so law; thus confounding sociology with the science or theory of law itself. Law, sociability, and similar concepts, are to be dealt with in a mode analogous to that employed by us in the consideration and analysis of historicity and technique.
Religion.
It may seem that religious activity should be judged otherwise. But religion is nothing but knowledge, and does not differ from its other forms and sub-forms. For it is in turn either the expression of practical aspirations and ideals (religious ideals), or historical narrative (legend), or conceptual science (dogma).
It can therefore be maintained with equal truth either that religion is destroyed by the progress of human knowledge, or that it is always present there. Their religion was the whole intellectual patrimony of primitive peoples: our intellectual patrimony is our religion. The content has been changed, bettered, refined, and it will change and become better and more refined in the future also; but its form is always the same. We do not know what use could be made of religion by those who wish to preserve it side by side with the theoretic activity of man, with his art, with his criticism and with his philosophy. It is impossible to preserve an imperfect and inferior kind of knowledge, such as religion, side by side with what has surpassed and disproved it. Catholicism, which is always consistent, will not tolerate a Science, a History, an Ethics, in contradiction to its views and doctrines. The rationalists are less coherent: they are disposed to allow a little space in their souls for a religion in contradiction with their whole theoretic world.
The religious affectations and weaknesses prevalent among the rationalists of our time have their origin in the superstitious worship so recklessly lavished upon the natural sciences. We know ourselves and their chief representatives admit that these sciences are all surrounded by limits. Science having been wrongly identified with the so-called natural sciences, it could be foreseen that the remainder would be sought in religion; that remainder with which the human spirit cannot dispense. We are therefore indebted to materialism, to positivism, to naturalism for this unhealthy and often disingenuous recrudescence of religious exaltation, which belongs to the hospital, when it does not belong to the politician.
Metaphysic.