One of the great symptoms of returning vitality in the imagination of Europe, as the eighteenth century passed into the nineteenth, was its re-awakening to the significance and beauty of the Greek mythology. For a hundred years and more the value of that mythology for the human spirit had been forgotten. There never had been a time when the names of the ancient, especially the Roman, gods and goddesses were used so often in poetry, but simply in cold obedience to tradition and convention; merely as part of the accepted mode of speech of persons classically educated, and with no more living significance than belonged to the trick of personifying abstract forces and ideas by putting capital initials to their names. So far as concerned any real effect upon men's minds, it was tacitly understood and accepted that the Greek mythology was 'dead.' As if it could ever die; as if the 'fair humanities of old religion,' in passing out of the transitory state of things believed into the state of things remembered and cherished in imagination, had not put on a second life more enduring and more fruitful than the first. Faiths, as faiths, perish one after another; but each in passing away bequeaths for the enrichment of the after-world whatever elements it has contained of imaginative or moral truth or beauty. The polytheism of ancient Greece, embodying the instinctive effort of the brightliest gifted human race to explain its earliest experiences of nature and civilization, of the thousand moral and material forces, cruel or kindly, which environ and control the life of man on earth, is rich beyond measure in such elements; and if the modern world at any time fails to value them, it is the modern mind which is in so far dead and not they. Some words of Johnson's written forty years before Keats's time may help us to realize the full depth of the deadness from which in this respect it had to be awakened:-- He (Waller) borrows too many of his sentiments and illustrations from the old Mythology, for which it is in vain to plead the example of ancient poets: the deities, which they introduced so frequently, were considered as realities, so far as to be received by the imagination, whatever sober reason might even then determine. But of these images time has tarnished the splendour. A fiction, not only detected but despised, can never afford a solid basis to any position, though sometimes it may furnish a transient allusion, or slight illustration.