If we read such statement, if, in addition, we remember the popular-philosophical science of men like _Haeckel_, particularly perhaps the literature which he recommends for information about Christianity, and of which he himself makes use; if we have read _Schopenhauer_, _Nietzsche_, or the “Philosophy of Races” of a _Chamberlain_,—we can no longer be at a loss what to think of the “rule of reason” and of the “search for pure truth.” Observe, also, the restless haste of those who, having turned their back upon the Catholic Church, now proceed to attack her, observe their agitated work and incitement, how they rummage and ransack the nooks and corners of the history of the Church in quest of refuse and filth, and if the find is not sufficient how they even help it along by forgery, all this to demonstrate to the world that the grandest fact in history is really absurdity and filth;—then one will understand what instincts may be found there to guide “reason and science.” How even sexual impulses are trying to shape their own ethics we shall not examine here. _F. W. Foerster_ relates: “I once heard a moral pervert expound his ethical and religious notions; they were nothing but the reflection of his perverse impulses. But he thought them to be the result of his reasoning.” Is there not known in these days the inherited disorder of the human heart as characterized by the Apostle in the words: “But I see another law in my members, fighting against the law of my mind, and captivating me in the law of sin (Rom. vii. 23)”? The Ancients knew it. The wisdom of _Plato_ knew it, who speaks of the “pricks of sin, sunk into man, coming from an old, unexpiated offence, giving birth to wickedness.” The wise _Cicero_ knew of it: “Nature has bestowed upon us but a few sparks of knowledge, which, corrupted by bad habits and errors, we soon extinguish, with the result that the light of nature does nowhere appear in its clearness and brightness.” Truth is often disagreeable to nature. And if not subdued and ruled by strong discipline, nature proceeds to oppose the truth. Only to lofty self-discipline and purity of morals is reserved the privilege of facing the highest truths with a calm eye. “Blessed are the pure in heart, for they shall see God.” Mental Bondage.