Moreover, it would seem that most extraordinary and miraculous events come to pass by the working of the power of nature. For wonderful and terrible and amazing things happen owing to natural forces. And this S. Gregory points out in his Second Dialogue.121 The Saints perform miracles, sometimes by a prayer, sometimes by their power alone. There are examples of each; S. Peter by praying raised to life Tabitha, who was dead.122 By rebuking Ananias and Sapphira, who were telling a lie, he slew them without any prayer. Therefore a man by his mental influence can change a material body into another, or he can change such a body from health to sickness and conversely.
Moreover, the human body is nobler than any other body, but because of the passions of the mind the human body changes and becomes hot or cold, as is the case with angry men or men who are afraid: and so even greater change takes place with regard to the effects of sickness and death, which by their power can greatly change a material body.
But certain objections must be allowed. The influence of the mind cannot make an impression upon any form except by the intervention of some agent, as we have said above. And these are the words of S. Augustine in the book which we have already quoted: It is incredible that the angels who fell from Heaven should be obedient to any material things, for they obey God only. And much less can a man of his natural power bring about extraordinary and evil effects. The answer must be made, there are even today many who err greatly on this point, making excuses for witches and laying the whole blame upon the craft of the devil, or ascribing the changes that they work to some natural alteration. These errors may be easily made clear. First, by the description of witches which S. Isidore gives in his Etymologiae, c. 9: Witches are so called on account of the blackness of their guilt, that is to say, their deeds are more evil than those of any other malefactors. He continues: They stir up and confound the elements by the aid of the devil, and arouse terrible hailstorms and tempests. Moreover, he says they distract the minds of men, driving them to madness, insane hatred, and inordinate lusts. Again, he continues, by the terrible influence of their spells alone, as it were by a draught of poison, they can destroy life.
And the words of S. Augustine in his book on The City of God are very much to the point, for he tells us who magicians and witches really are. Magicians, who are commonly called witches, are thus termed on account of the magnitude of their evil deeds. These are they who by the permission of God disturb the elements, who drive to distraction the minds of men, such as have lost their trust in God, and by the terrible power of their evil spells, without any actual draught or poison, kill human beings. As Lucan says: A mind which has not been corrupted by any noxious drink perishes forspoken by some evil charm. For having summoned devils to their aid they actually dare to heap harms upon mankind, and even to destroy their enemies by their evil spells. And it is certain that in operations of this kind the witch works in close conjunction with the devil. Secondly, punishments are of four kinds: beneficial, hurtful, wrought by witchcraft, and natural. Beneficial punishments are meted out by the ministry of good Angels, just as hurtful punishments proceed from evil spirits. Moses smote Egypt with ten plagues by the ministry of good Angels, and the magicians were only able to perform three of these miracles by the aid of the devil. And the pestilence which fell upon the people for three days because of the sin of David who numbered the people, and the 72,000 men who were slain in one night in the army of Sennacherib, were miracles wrought by the Angels of God, that is, by good Angels who feared God and knew that they were carrying out His commands.
Destructive harm, however, is wrought by the medium of bad angels, at whose hands the children of Israel in the desert were often afflicted. And those harms which are simply evil and nothing more are brought about by the devil, who works through the medium of sorcerers and witches. There are also natural harms which in some manner depend upon the conjunction of heavenly bodies, such as dearth, drought, tempests, and similar effects of nature.
It is obvious that there is a vast difference between all these causes, circumstances, and happenings. For Job was afflicted by the devil with a harmful disease, but this is nothing to the purpose. And if anybody who is too clever and overcurious asks how it was that Job was afflicted with this disease by the devil without the aid of some sorcerer or witch, let him know that he is merely beating the air and not informing himself as to the real truth. For in the time of Job there were no sorcerers and witches, and such abominations were not yet practised. But the providence of God wished that by the example of Job the power of the devil even over good men might be manifested, so that we might learn to be on our guard against Satan, and, moreover, by the example of this holy patriarch the glory of God shines abroad, since nothing happens save what is permitted by God.
With regard to the time at which this evil superstition, witchcraft, appeared, we must first distinguish the worshippers of the devil from those who were merely idolaters. And Vincent of Beauvais123 in his Speculum historiale, quoting many learned authorities, says that he who first practised
