In the olden times the existence of devils was universally admitted. The people had no doubt upon that subject, and from such belief it followed as a matter of course, that a person, in order to vanquish these devils, had either to be a god, or to be assisted by one. All founders of religions have established their claims to divine origin by controlling evil spirits, and suspending the laws of nature. Casting out devils was a certificate of divinity. A prophet, unable to cope with the powers of darkness, was regarded with contempt. The utterance of the highest and noblest sentiments, the most blameless and holy life, commanded but little respect, unless accompanied by power to work miracles and command spirits.