Even a slight acquaintance with European history reveals the existence of a number of curious and apparently unreasonable beliefs prevalent throughout a period extending from early medieval to comparatively recent times. There is the belief in witchcraft, for instance. From the canons of synods in the early Middle Ages down to the pitiless executions during the witchcraft delusion, there is abundant evidence of its prominence. It played its part not only in humble life, but in court intrigues and in the accusations brought at state trials.