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. [Sidenote: _Metaphysic._] Philosophy removes from religion all reason for existing, because it substitutes itself for religion. As the science of the spirit, it looks upon religion as a phenomenon, a transitory historical fact, a psychic condition that can be surpassed. Philosophy shares the domain of knowledge with the natural sciences, with history and with art. To the first it leaves enumeration, measurement and classification; to the second, the chronicling of what has individually happened; to the third, the individually possible. There is nothing left to allot to religion. For the same reason, philosophy, as the science of the spirit, cannot be philosophy of the intuitive datum; nor, as has been seen, _philosophy of history,_ nor _philosophy of nature_; and therefore there cannot be a philosophical science of what is not form and universal, but material and particular. This amounts to affirming the impossibility of _Metaphysic._