In these dancers of Saint John and Saint Vitus we can recognize the Bacchic choruses of the Greeks, with their prehistory in Asia Minor, as far back as Babylon and the orgiastic Sacaea. Some people, either through a lack of experience or through obtuseness, turn away with pity or contempt from phenomena such as these as from 'folk diseases', bolstered by a sense of their own sanity; these poor creatures have no idea how blighted and ghostly this 'sanity' of theirs sounds when the glowing life of Dionysiac revellers thunders past them.