The narrative material imported and worked up in the Romantic School is, of course, enormously more important than the mere decorations taken out of Solinus or Macrobius. It is not, however, with the principal masters the most important part of their study. Chrestien, for example, often treats his adventures with great levity in comparison with the serious psychological passages; the wonder often is that he should have used so much of the common stuff of adventures in poems where he had a strong commanding interest in the sentiments of the personages. There are many irrelevant and unnecessary adventures in his _Erec_, _Lancelot_, and _Yvain_, not to speak of his unfinished _Perceval_; while in _Cliges_ he shows that he did not rely on the commonplaces of adventure, on the regular machinery of romance, and that he might, when he chose, commit himself to a novel almost wholly made up of psychology and sentiment. Whatever the explanation be in this case, it is plain enough both that the adventures are of secondary value as compared with the psychology, in the best romances, and that their value, though inferior, is still considerable, even in some of the best work of the "courtly makers." The greatest novelty in the twelfth-century narrative materials was due to the Welsh; not that the "matter of Britain" was quite overwhelming in extent, or out of proportion to the other stores of legend and fable. "The matter of Rome the Great" (not to speak again of the old epic "matter of France" and its various later romantic developments) included all known antiquity, and it was recruited continually by new importations from the East. The "matter of Rome," however, the tales of Thebes and Troy and the wars of Alexander, had been known more or less for centuries, and they did not produce the same effect as the discovery of the Celtic stories. Rather, it may be held that the Welsh stories gave a new value to the classical authorities, and suggested new imaginative readings. As Chaucer's _Troilus_ in our own time has inspired a new rendering of the _Life and Death of Jason_, so (it would seem) the same story of Jason got a new meaning in the twelfth century when it was read by Benoit de Sainte More in the light of Celtic romance. Then it was discovered that Jason and Medea were no more, and no less, than the adventurer and the wizard's daughter, who might play their parts in a story of Wales or Brittany. The quest of the Golden Fleece and the labours of Jason are all reduced from the rhetoric of Ovid, from their classical dignity, to something like what their original shape may have been when the story that now is told in Argyll and Connaught of the _King's Son of Ireland_ was told or chanted, ages before Homer, of a king's son of the Greeks and an enchantress beyond sea. Something indeed, and that of the highest consequence, as will be seen, was kept by Benoit from his reading of the _Metamorphoses_; the passion of Medea, namely.