But several fallacies underlie this second question. The fallacy that the moral principles of our nature are necessarily connected with the extent of our intellectual capacities; the fallacy that Divine Truths can be adequately expressed through the inaccurate instrument of human language; the fallacy that deep things are necessarily made plain by the use of plain words; the fallacy that everything upon which we act is necessarily understood. A plain man does not refuse to use the telegraph because he may know nothing about the Correlation of Force, or a simple person to travel because "space" is beyond his comprehension. If the Gospel is, as St. Paul says it is, a revelation of the power of God unto salvation, an amount of mystery must necessarily surround it. Since it is impossible that the Divine Nature should be to us other than a mystery, a revelation of Divine purposes such as is the Gospel as understood by the Church, must remain mysterious also. Only upon the supposition that our Lord was the teacher of a high but still human morality can we remove all mystery from the Christian Gospel, if it still deserve the name. Such teaching might be conveyed in plain words and short terms, but it would cease to be a Gospel which angels desire to look into, and could hardly be described as the "manifold wisdom of God," or be the story of the "love of Christ, which passeth knowledge." The Gospel, as the Church understands it, rests upon the revealed fact of the Incarnation, or the union of the Infinite with the Finite, that He who is very God of very God became man in order to introduce the Divine possibility of manhood being made to partake of the Divine nature; and so long as the triumphal chant ascends that "the Catholic Faith is this," so long will the Church's Faith be veiled indeed with mystery, and so long will she continue to gather within her bounds the humble and holy men of heart, who are content to say, "I cannot understand: I love." That "God sent His only-begotten Son into the world that we might live through Him" are short and plain words enough, and Gospel enough, surely, but the depth of their meaning is unfathomable by even the most cultivated understanding, to which the power of God and the wisdom of God may appear to be but foolishness. LETTER IX