This growing inwardness of art is a main feature of literary history. It is illustrated on the grand scale by the imagery of war. In the beginning war for its own sake, mere fighting, is the subject; then war for a cause, which ennobles it beyond the power of personal prowess and justifies it as an element in national life; next, war for love, which refines it and builds the paradox of the deeds of hate serving the will of courtesy; last, war for the soul’s salvation, which is unseen battle within the breast. Achilles, Aeneas, Lancelot, the Red Cross Knight are the terms in this series; they mark the transformation of the most savage act of man into the symbol of his highest spiritual effort. Nature herself is subject to this inwardness of art; at first merely objective as a condition, and usually a hostile, or at least dangerous, condition of human life, she becomes the witness to omnipotent power in illimitable beauty and majesty, its infinite unknowableness, and its tender care for all creatures, as in the Scriptures; and at last the words of our Lord concentrate, in some simple flower, the profoundest of moral truths,—that the beauty of the soul is the gift of God, out of whose eternal law it blossoms and has therein its ever living roots, its air and light, its inherent grace and sweetness: “Consider the lilies of the field, how they grow: they toil not, neither do they spin: and yet I say unto you that even Solomon in all his glory was not arrayed like one of these. Shall he not much more clothe you, O ye of little faith?” Such is the normal development of all imagery; its actuality limits it, and in becoming remote it grows flexible. It is only by virtue of this that man can retain the vast treasures of race-imagination, and continue to use them, such as the worlds of mythology, of chivalry, and romance. The imagery is, in truth, a background, whose foreground is the ideal meaning. Thus even fairyland, and the worlds of heaven and hell, have their place in art. The actuality of the imagery is in fact irrelevant, just as history is in the idealization of human events. Its transience, then, cannot matter, except in so far as it loses intelligibility through changes of time, place, and custom, and becomes a dead language. It follows that that imagery which keeps close to universal phases of nature, to pursuits always necessary in human life, and to ineradicable beliefs in respect to the supernatural, is most permanent as a language; and here art in its most immortal creations returns again to its omnipresent character as a thing of the common lot.