Persons of this temper will certainly not read this work of ours, or, if they do read it, it will be with contempt or pity. I do not think it necessary to refute those paradoxes here; the Bishop of Senez has done it with his usual erudition and zeal, in a long letter printed at Utrecht in 1736. I do not deny that the sacred writers may sometimes have spoken in a popular manner, and in accordance with the prejudice of the people. But it is carrying things too far to reduce the power of the demon to being able to act upon us only by means of suggestion; and it is a presumption unworthy of a philosopher to decide on the power of spirits over bodies, having no knowledge, either by revelation or by reason, of the extent of the power of angels and demons over matter and human bodies. We may exceed due measure by granting them excessive power, as well as in not according them enough. But it is of infinite importance to Religion to discern justly between what is natural, or supernatural, in the operations of angels and demons, that the simple may not be left in error, nor the wicked triumph over the truth, and make a bad use of their own wit and knowledge, to render doubtful what is certain, and deceiving both themselves and others by ascribing to chance or illusion of the senses, or a vain prepossession of the mind, what is said of the apparitions of angels, demons, and deceased persons; since it is certain that several of these apparitions are quite true, although there may be a great number of others that are very uncertain, and even manifestly false. I shall therefore make no difficulty in owning that even miracles, at least things that appear such, the prediction of future events, movements of the body which appear beyond the usual powers of nature, to speak and understand foreign languages unknown before, to penetrate the thoughts, discover concealed things, to be raised up, and transported in a moment from one place to another, to announce truths, lead a good life externally, preach Jesus Christ, decry magic and sorcery, make an outward profession of virtue; I readily own that all these things may not prove invincibly that all who perform them are sent by God, or that these operations are real miracles; yet we cannot reasonably suppose the demon to be mixed up in them by God's permission, or that the demons or the angels do not act upon those persons who perform prodigies, and foretell things to come, or who can penetrate the thoughts of the heart, or that God himself does not produce these effects by the immediate action of his justice or his might.