The Church has the doctrine of the devil, of an evil principle, whom we like to imagine complete with cloven hoofs, horns, and tail, half man, half beast, a chthonic deity apparently escaped from the rout of Dionysus, the sole surviving champion of sinful joys of paganism.  An excellent picture, and one which exactly describes the grotesque and sinister side of the unconscious; for we have never really come to grips with it and consequently it has remained in its original savage state.  TPofT 28