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. This belief in good and evil powers had its origin in the fact that man was surrounded by what he was pleased to call good and evil phenomena. Phenomena affecting man pleasantly were ascribed to good spirits, while those affecting him unpleasantly or injuriously, were ascribed to evil spirits. It being admitted that all phenomena were produced by spirits, the spirits were divided according to the phenomena, and the phenomena were good or bad as they affected man. Good spirits were supposed to be the authors of good phenomena, and evil spirits of the evil--so that the idea of a devil has been as universal as the idea of a god. Many writers maintain that an idea to become universal must be true; that all universal ideas are innate, and that innate ideas cannot be false. If the fact that an idea has been universal proves that it is innate, and if the fact that an idea is innate proves that it is correct, then the believers in innate ideas must admit that the evidence of a god superior to nature, and of a devil superior to nature, is exactly the same, and that the existence of such a devil must be as self-evident as the existence of such a god. The truth is, a god was inferred from good, and a devil from bad, phenomena. And it is just as natural and logical to suppose that a devil would cause happiness as to suppose that a god would produce misery. Consequently, if an intelligence, infinite and supreme, is the immediate author of all phenomena, it is difficult to determine whether such intelligence is the friend or enemy of man. If phenomena were all good, we might say they were all produced by a perfectly beneficent being. If they were all bad, we might say they were produced by a perfectly malevolent power; but, as phenomena are, as they affect man, both good and bad, they must be produced by different and antagonistic spirits; by one who is sometimes actuated by kindness, and sometimes by malice; or all must be produced of necessity, and without reference to their consequences upon man.