Theology, on the contrary, supernatural in its object, is natural in its essence, since it consists in the rational analysis of the data of faith. There is, then, nothing repugnant in admitting the very direct and very positive influence which the study of philosophy exercises over its acquisition.

This influence extends itself to every branch of theology—to dogmatic theology first; for this branch of sacred science, as we have shown in a preceding article, borrows from philosophy the processes which it uses, the method which it follows, and the greatest part of the definitions and axioms on which it depends.

God, having made use of human language in order to reveal to us his mysteries, has laid us thereby under an obligation of applying, in a just measure, to the supernatural order the ideas of the natural order expressed by this language. We must therefore analyze with the greatest care those ideas, under pain of comprehending nothing of revelation, and of falling into the most fatal errors; and this analysis ought to be proportionately more delicate when it applies itself to ideas involved in the dogmas of faith, since it ought to discern in those ideas that which is proper to the supernatural order from that which belongs to the universal essence of things.

The study of dogmatic theology is then impossible if it does not depend upon an exact and profound study of metaphysics. There is not a single one of those general notions which the science of metaphysics tries in its crucible that does not show itself again in the different treatises of theology, and present itself before us under all its forms. He who has not beforehand penetrated into the depths of these notions will walk in darkness; he will hesitate and be in constant doubt, and will have no means of protecting himself from the grossest blunders save by imposing on himself the rigorous task of studying philosophy in proportion as he advances in the study of theology.

The same connection which exists between speculative philosophy and dogmatic theology exists between practical philosophy, moral theology, and canon law. Perhaps this latter connection is still more intimate than the former; for in moral questions there is much less of revealed truth than in dogmatic. The moral theologian, then, will apply most often to reason for the principles which ought to guide him. It is therefore by the aid of this torch that he will solve the difficulties which present themselves in the application of those principles. The greatest part of the duties which man has to fulfil, whether towards God, towards his fellows, or himself, pertain to the essential order, and are therefore under the domain of philosophy. To it, in fine, belong those fundamental theories on human actions and conscience which form as it were the pivot of moral theology.

As for canon law, its study presupposes general notions on law and on the conditions of social authority no less than the study of civil jurisprudence. Natural right is the necessary preamble of both; it establishes the base whereon is founded the legislation of the church as well as of the state; it lays down the general formulas which the positive laws apply to particular cases; it is then to positive right, whether canonical or civil, what algebra is to geometry. He who is possessed of it will have no difficulty in generalizing particular data, and enlarging by simplifying them, as he who ignores it will only acquire a far more imperfect knowledge at the cost of a far greater amount of labor.

These considerations will aid us in comprehending the importance which the church has attached from all time to the teachings of philosophy in her universities, and the efforts she has made to lift it up when she has seen it threatened by a disastrous decline. If we have caught the straight line which connects this teaching with that of sacred science, we shall no longer be astonished at seeing a great Pope publish a bull in order to give to philosophy the favor which the emoluments attached to the study of jurisprudence tended to snatch from it. The church knew that philosophy could not fall without theology falling with it. Would that we could understand it thus, and apply to the restoration of philosophy all the zeal which we ought to have for the resurrection of the high ecclesiastical studies!

It is here—let us understand it well—that we must commence. If you take St. Augustine or St. Thomas as the type of a great theologian, you cannot fail to set upon his brow the aureola of philosophy. A theology which, to the exposition of dogma, did not unite its philosophic analysis, would be nothing more than a catechism; it would have nothing in common with that magnificent science, the materials of which the holy fathers have furnished, and whose majestic edifice the scholastic doctors have built up. Never will the priest be able to fulfil, in all its extent, the function of doctor, unaided by a profound study of philosophy; never, above all, will he be able to defend revealed truth against the attacks of its enemies; for I ask, against what points are these attacks directed to-day above all? Is it not against those truths which belong at once to the natural and supernatural order—to philosophy and theology? And of what arms do our enemies avail themselves to effect a breach in these fundamental dogmas? Are they not almost exclusively those with which a false philosophy supplies them? What shall we do then, we, the defenders of truth? What is our sacred, indispensable duty in the face of these attacks, which day by day tear away one or other of the sheep from the flock of the church? Are we to content ourselves with groaning over the abuse of reason? Shall we give pretext to the ignorant to conclude from our invectives that there is a contradiction between our faith and true philosophy? No; we will mount the breach boldly; we will capture the weapon which our enemy uses in his attack. Our fathers in the faith have taught us how to wield it. Let us demonstrate that true philosophy is on our side, and that our adversaries can only attack our faith by denying their own reason. Thus the ignorant will be enlightened; the wavering minds strengthened; come what may, we shall have done our duty in rendering to the Word of God the testimony which the necessities of the time in which we live demand of us.

I trust I have said enough to disabuse those of their dangerous error who believe that they glorify theology by vilifying with all their power philosophy. Undoubtedly the philosophy which they pursue with their invective is the philosophy which is separate from faith, the philosophy of doubt, of revolt, that is to say, the very opposite of true philosophy. But to hear them speak, one would say, sometimes, that they recognized no other philosophy than that, and conceded to their adversaries the absurd and insolent pretension which they assume of being the representatives of reason. Thank God, this pretension was never less defensible than in our days; never has revolted reason done better the work of faith by its monstrous excesses, and made more advantageous the ground of the champions of the cause of God. Never was it more manifest that there are no true defenders of human dignity except the defenders of divine authority. Let us know how to profit by our advantages. All of us who love the church and the doctrine of heaven, whose depository is the church—we who groan under the darkness which gathers round intelligence, and seems to thicken day by day, let us unite our efforts, and employ every influence we possess toward that restoration of true philosophy which is so desirable. Thereby we render a service equally signal to society and to the church: to society, which is being lost, because the love of truth is extinguished in the hearts of men; to the church, the mistress of truth, which has no longer a hold upon souls to whom truth is nothing. Nay, more; to the divine Word himself we render the greatest service he can expect from his creatures, by re-establishing in their integrity the two channels whereby he pours his light into our intelligence—the science of natural and supernatural truths.

We must, in fact, lift ourselves up to the divine Word in order to form an idea of the destination of philosophy, and to appreciate exactly its dignity and importance. Is not he indeed the common source of natural and supernatural truth? Different in their mode of manifesting themselves to us, are they not identical in their beginning? Whence comes it that, in perceiving the essential properties of my soul, the laws of numbers and of figures, I am absolutely certain that all minds which judge rightly must perceive them in the same manner, and that never, at any moment of time or eternity, can they perceive them otherwise? This necessity, this immensity, this eternity, which our intelligence embraces, proves to us manifestly that these essential laws which we perceive in contingent beings are but the reproduction of a necessary and infinite type. It is then the splendor of God, it is his Word, who reveals himself to our reason, by the medium of his creatures, before revealing himself to us by himself. Philosophy is, then, truly a way which God has opened up for us of journeying to him, and should we disdain to enter thereon? Should not we traverse it with the same reverence with which Moses approached the burning bush? And when, guided by Augustine and Thomas, we behold appear before our eyes the great light of the idea of the infinite; when that name Jehovah, He who is, graven in our soul by the hand of God himself, and involved in the idea of being in all our intellectual acts, shall unfold itself little by little and grow in splendor, like the flame of the aurora, and reveal to us at last in their infinite simplicity the multiplicity of the divine attributes and the laws of all creation, shall we not bow ourselves down before him with the prophet and intone a canticle of acts of praise? And should we permit one to speak with contempt of a science whereby God is manifested to us? Let one say all the evil he wishes of that proud philosophy which seeks in the natural light of reason a means of obscuring the supernatural light of faith. Nothing, I acknowledge, is so revolting, nothing so satanic, as this transformation of light into darkness which a systematic incredulity effects in a rebellious intelligence. But, in like manner, nothing is so beautiful, nothing so divine, as the fusion of natural with supernatural light, of philosophy with faith, which is effected in the intellect of a Christian. Read the Summa of St. Thomas, the Confessions and the other works of St. Augustine, the Itinerarium of the Soul to God of St. Bonaventure, and try, if you can, to separate one from another the thoughts and the sentiments which these great doctors have borrowed from faith, from those which they have borrowed from philosophy. This separation you will find impossible—the rays of these two torches are so intersected, united, and mingled in these splendid intellects. Starting from the same focus, after traversing diverse routes, they find themselves reunited in acting together on souls as eager for science as they are docile to the teachings of faith; and together they have worked in the soul to fulfil their common mission, in producing in them the created image of the uncreated Word. This union with the light of faith in the intellect of the Christian is the end to which philosophy aspires, in the same way as faith, penetrating into this intellect, seeks to unite itself therein with science. “Faith seeking understanding.” Oh! how ill do those understand the interests of philosophy who are ever prating of its independence, and who by independence understand an absolute separation between its teachings and those of revelation! How can light tend to separate itself from light? No, not in this separation does the dignity of philosophy consist; it consists, on the contrary, in producing here below in the soul of its true disciples a reflection and an outline of that splendor which the clear vision of the divine essence produces in the intelligence of the blessed, to make them comprehend what they believe in order to make them love it the more.