The admission of the Olympic deities as a kind of divine machinery for diversifying and explaining the narrative was much more pregnant with consequences. Outwardly, it is simply adopted from Homer, but the spirit which animates it is altogether different. The Greek, in spite of his intellectual scepticism, retained an aesthetic and emotional belief in his national gods, and at any rate it was natural that he should celebrate them in his verse; but the Roman poet claimed to utilize the Greek Pantheon for artistic purposes alone. He professed no belief in the beings he depicted. They were merely an ornamental, supernatural element, either introduced at will, as in Horace, or regulated according to traditional conceptions, as in Ennius and Virgil. Apollo, Minerva, and Bacchus, were probably no more to him than they are to us. They were names, consecrated by genius and convenient for art, under which could be combined the maximum of beautiful associations with the minimum of trouble to the poet. The custom, which perpetuated itself in Latin poetry, revived again with the rise of Italian art; and under a modified form its influence may be seen in the grand conceptions of Milton. The true nature of romantic poetry is, however, alien to any such mechanical employment of the supernatural, and its comparative infrequency in the highest English and German poetry, stamps these as products of the modern spirit. Had the Romans left Olympus to itself, and occupied themselves only with the rhetorical delineation of human action and feeling, they would have chosen a less ambitious but certainly more original path. Lucretius struggles against the prevailing tendency; but so unable were the Romans to invest their finer fancies with any other shape, that even while he is blaming the custom he unawares falls into it.