All the poetry of the middle ages has a certain definite character, through which it differs from the poetry of the Greeks and Romans. In reference to this difference the former is called Romantic, the latter Classic. These names, however, are misleading, and have hitherto caused the most vexatious confusion, which is even increased when we call the antique poetry plastic as well as classic. In this, particularly, lay the germ of misunderstandings; for artists ought always to treat their subject-matter plastically. Whether it be Christian or pagan, the subject ought to be portrayed in clear contours. In short, plastic configuration should be the main requisite in the modern romantic as well as in antique art. And, in fact, are not the figures in Dante's _Divine Comedy_ or in the paintings of Raphael just as plastic as those in Virgil or on the walls of Herculaneum? The difference consists in this,--that the plastic figures in antique art are identical with the thing represented, with the idea which the artist seeks to communicate. Thus, for example, the wanderings of the Odyssey mean nothing else than the wanderings of the man who was a son of Laertes and the husband of Penelope, and was called Ulysses. Thus, again, the Bacchus which is to be seen in the Louvre is nothing more than the charming son of Semele, with a daring melancholy look in his eyes, and an inspired voluptuousness on the soft arched lips. It is otherwise in romantic art: here the wanderings of a knight have an esoteric signification; they typify, perhaps, the mazes of life in general. The dragon that is vanquished is sin; the almond-tree, that from afar so encouragingly wafts its fragrance to the hero, is the Trinity, the God-Father, God-Son, and God-Holy-Ghost, who together constitute one, just as shell, fibre, and kernel together constitute the almond. When Homer describes the armour of a hero, it is naught else than a good armour, which is worth so many oxen; but when a monk of the middle ages describes in his poem the garments of the Mother of God, you may depend upon it, that by each fold of those garments he typifies some special virtue, and that a peculiar meaning lies hidden in the sacred robes of the immaculate Virgin Mary; as her Son is the kernel of the almond, she is quite appropriately described in the poem as an almond-blossom. Such is the character of that poesy of the middle ages which we designate _romantic_.