The power of _will_ is a phenomenon that has been observed in all ages of the world, though of late years much less than at an earlier period; and, as it was then more frequently exerted for evil than good, it was looked upon as a branch of the art of black magic, while the philosophy of it being unknown, the devil was supposed to be the real agent, and the witch, or wizard, only his instrument. The profound belief in the existence of this art is testified by the twelve tables of Rome, as well as by the books of Moses, and those of Plato, &c. It is extremely absurd to suppose that all these statutes were enacted to suppress a crime which never existed: and, with regard to these witches and wizards, we must remember, as Dr. Ennemoser justly remarks, that the force of will has no relation to the strength or weakness of the body: witness the extraordinary feats occasionally performed by feeble persons under excitement, &c.; and, although these witches and wizards were frequently weak, decrepit people, they either believed in their own arts, or else that they had a friend or coadjutor in the devil, who was able and willing to aid them. They, therefore, did not doubt their own power, and they had the one great requisite, _faith_. To _will and to believe_, was the explanation given by the Marquis de Puységur of the cures he performed; and this unconsciously becomes the recipe of all such men as Greatrix, the Shepherd of Dresden, and many other wonder-workers, and hence we see why it is usually the humble, the simple and the child-like, the solitary, the recluse, nay, the ignorant, who exhibit traces of these occult faculties; for he who can not believe can not _will_, and the skepticism of the intellect disables the magician; and hence we say, also, wherefore, in certain parts of the world and in certain periods of its history, these powers and practices have prevailed. They were believed in because they existed; and they existed because they were believed in. There was a continued interaction of cause and effect—of faith and works. People who look superficially at these things, delight in saying that the more the witches were persecuted the more they abounded; and that when the persecution ceased we heard no more of them. Naturally, the more they were persecuted the more they believed in witchcraft and in themselves; when persecution ceased, and men in authority declared that there was no such thing as witchcraft or witches, they lost their faith, and with it that little sovereignty over nature that that faith had conquered.