In the hands of the poet mystery does not hide knowledge, but reveals it as by its proper medium. Parables and symbols are the only possible modes of expressing realities which are clear to perception though dark to the understanding. “Without a parable he spake not” who always spake of primary realities. Every spiritual reality fades into something else, and none can tell the point at which it fades. The only perfectly definite things in the universe are the conceptions of a fool, who would deny the sun he lives by if he could not see its disk. Natural sciences are definite, because they deal with laws which are not realities but conditions of realities. The greatest and perhaps the only real use of natural science is to supply similes and parables for poets and theologians. But if the realities of love were not in themselves dark to the understanding, it would be necessary to darken them--not only lest they should be profaned, but also because, as St. Bernard says, “The more the realities of heaven are clothed with obscurity, the more they delight and attract, and nothing so much heightens longing as such tender refusal.” “Night,” says the inspirer of St. Bernard, “is the light of my pleasures.” Love is rooted deeper in the earth than any other passion; and for that cause its head, like that of the Tree Igdrasil, soars higher into heaven. The heights demand and justify the depths, as giving them substance and credibility. “That He hath ascended--what is it but because He first also descended into the lower parts of the earth?” Love “reconciles the highest with the lowest, ordering all things strongly and sweetly from end to end.” St. Bernard says that “divine love” (religion) “has its first root in the most secret of the human affections.” This affection is the only key to the inner sanctuaries of that faith which declares, “Thy Maker is thy Husband;” the only clue by which searchers of the “secret of the King,” in the otherwise inscrutable writings of prophet and apostle, discover, as Keble writes, “the loving hint that meets the longing guess,” which looks to the future for the satisfying and abiding reality, the passage of whose momentary shadow forms the supreme glory of our mortality.