"Reason, indeed, enlightened by faith, and seeking, with diligence and godly sobriety, may, by God's gift, come to some understanding, limited in degree, but most wholesome in its effects, of mysteries, both from the analogy of things which are naturally known and from the connection of the mysteries themselves with one another and with man's last end. But never can reason be rendered capable of thoroughly understanding mysteries as it does those truths which form its proper object. For God's mysteries, in their very nature, so far surpass the reach of created intellect, that, even when taught by revelation and received by faith, they remain covered by faith itself, as by a veil, and shrouded, as it were, in darkness as long as in this mortal life.

"But, although faith be above reason, there never can be a real disagreement between them, since the same God who reveals mysteries and infuses faith has given man's soul the light of reason, and God cannot deny himself, nor can one truth ever contradict another. Wherefore the empty shadow of such contradiction arises chiefly from this, that either the doctrines of faith are not understood and set forth as the Church really holds them, or that the vain devices and opinions of men are mistaken for the dictates of reason. We therefore pronounce false every assertion which is contrary to the enlightened truth of faith. Moreover, the Church, which, together with her apostolic office of teaching, is charged also with the guardianship of the deposits of faith, holds likewise from God the right and the duty to condemn 'knowledge, falsely so called,' 'lest any man be cheated by philosophy and vain deceit.' Hence all the Christian faithful are not only forbidden to defend, as legitimate conclusions of science, those opinions which are known to be contrary to the doctrine of faith, especially when condemned by the Church, but are rather absolutely bound to hold them for errors wearing the deceitful appearance of truth."

THE VATICAN ANATHEMAS. "Not only is it impossible for faith and reason ever to contradict each other, but they rather afford each other mutual assistance. For right reason establishes the foundation of faith, and, by the aid of its light, cultivates the science of divine things; and faith, on the other hand, frees and preserves reason from errors, and enriches it with knowledge of many kinds. So far, then, is the Church from opposing the culture of human arts and sciences, that she rather aids and promotes it in many ways. For she is not ignorant of nor does she despise the advantages which flow from them to the life of man; on the contrary, she acknowledges that, as they sprang from God, the Lord of knowledge, so, if they be rightly pursued, they will, through the aid of his grace, lead to God. Nor does she forbid any of those sciences the use of its own principles and its own method within its own proper sphere; but, recognizing this reasonable freedom, she takes care that they may not, by contradicting God's teaching, fall into errors, or, overstepping the due limits, invade or throw into confusion the domain of faith.

"For the doctrine of faith revealed by God has not been proposed, like some philosophical discovery, to be made perfect by human ingenuity, but it has been delivered to the spouse of Christ as a divine deposit, to be faithfully guarded and unerringly set forth. Hence, all tenets of holy faith are to be explained always according to the sense and meaning of the Church; nor is it ever lawful to depart therefrom under pretense or color of a more enlightened explanation. Therefore, as generations and centuries roll on, let the understanding, knowledge, and wisdom of each and every one, of individuals and of the whole Church, grow apace and increase exceedingly, yet only in its kind; that is to say retaining pure and inviolate the sense and meaning and belief of the same doctrine."

Among other canons the following were promulgated.

"Let him be anathema—

"Who denies the one true God, Creator and Lord of all things, visible and invisible.

"Who unblushingly affirms that, besides matter, nothing else exists.

"Who says that the substance or essence of God, and of all things, is one and the same.

"Who says that finite things, both corporeal and spiritual, or at least spiritual things, are emanations of the divine substance; or that the divine essence, by manifestation or development of itself, becomes all things.