Such is the _peace between faith and science_ according to Christian principles. They are not torn apart, but join hands peacefully, like truth with truth, like two certain convictions, only gained in different ways. Similar is the peace and harmony between the results of various sciences, as physics and astronomy, geology and biology, which results, though arrived at by different methods, are still not opposed to each other, because they are both true. The authority of faith, however, must be _infallible_; the authority of a scientist, a school or the state, can never approach us with an absolute obligation to believe it, because it cannot vouch for the truth. To the Catholic his Church proves itself infallible; hence everything is here logically consequent. Protestant Church authorities have not infallibility, nor do they claim it. Hence their precepts are seen more and more opposed. Hence to the Protestant the firm attachment of the Catholic to his Church must ever remain unintelligible, and it is regrettable that Catholics take instruction from Protestants about their relation to their Church.(2) We must go a step further. If there is a divine revelation or an infallible Church—we speak only hypothetically—then no man and _no scientific research can claim the right_ to contradict this revelation and Church. Scientific research is not the hypostatized activity of a superhuman genius, of a god-like intelligence. No, it is the activity of a human intellect, and the latter is subject to God and truth everywhere. There can be no freedom to oppose the truth; no privilege not to be bound to the truth but rather to have the right to construct one’s views autonomously. But here lies the deeper reason why to-day thousands to whom _Kant’s_ _autonomism in thought_ has become the nerve of their intellectual life, will have nothing to do with guidance by revelation and Church. They can no longer understand that their reason should accept the truth from an external authority, not, indeed, because they would not find the truth, but because they would lose their independence.