". . . . the world itself has changed. There was a time when a traveler, if he had the will and knew only a few of the secrets, could send his barge out into the Summer Sea and arrive not at Glastonbury of the monks, but at the Holy Isle of Avalon; for at that time the gates between the worlds drifted within the mists, and were open, on to another, as the traveler thought and willed."