In some instances, bargains and compromises were made with the ghosts. One case is given where a multitude of devils traded a man for a herd of swine. In this transaction the devils were the losers, as the swine immediately drowned themselves in the sea. This idea of disease appears to have been almost universal, and is by no means yet extinct. The contortions of the epileptic, the strange twitchings of those afflicted with chorea, the shakings of palsy, dreams, trances, and the numberless frightful phenomena produced by diseases of the nerves, were all seized upon as so many proofs that the bodies of men were filled with unclean and malignant ghosts. Whoever endeavored to account for these things by natural causes, whoever attempted to cure diseases by natural means, was denounced by the church as an infidel. To explain anything was a crime. It was to the interest of the priest that all phenomena should be accounted for by the will and power of gods and devils. The moment it is admitted that all phenomena are within the domain of the natural, the necessity for a priest has disappeared. Religion breathes the air of the supernatural. Take from the mind of man the idea of the supernatural, and religion ceases to exist. For this reason, the church has always despised the man who explained the wonderful. Upon this principle, nothing was left undone to stay the science of medicine. As long as plagues and pestilences could be stopped by prayer, the priest was useful. The moment the physician found a cure, the priest became an extravagance. The moment it began to be apparent that prayer could do nothing for the body, the priest shifted his ground and began praying for the soul. Long after the devil idea was substantially abandoned in the practice of medicine, and when it was admitted that God had nothing to do with ordinary coughs and colds, it was still believed that all the frightful diseases were sent by him as punishments for the wickedness of the people. It was thought to be a kind of blasphemy to even try, by any natural means, to stay the ravages of pestilence. Formerly, during the prevalence of plague and epidemics, the arrogance of the priest was boundless. He told the people that they had slighted the clergy, that they had refused to pay tithes, that they had doubted some of the doctrines of the church, and that God was now taking his revenge. The people for the most part, believed this infamous tissue of priestcraft. They hastened to fall upon their knees; they poured out their wealth upon the altars of hypocrisy; they abased and debased themselves; from their minds they banished all doubts, and made haste to crawl in the very dust of humility.