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Summa Theologica, Part I (Prima Pars)

Thomas, Aquinas, Saint · c. 1265–1274

passage 830 of 864 · PART I ("Prima Pars") > Act; in treating of which subject Boethius employs that phrase (De (256/290)

in brief
Aquinas explains how apparent transformations by demons can be false or deceptive: demons may manipulate imagination from within or create visible phantasms from without to make senses perceive what is not truly so.

return to life. And if at times something of this sort seems to be effected by the operation of demons, it is not real but a mere semblance of reality.

Now this may happen in two ways. Firstly, from within; in this way a demon can work on man's imagination and even on his corporeal senses, so that something seems otherwise that it is, as explained above (Q. 111, AA. 3,4). It is said indeed that this can be done sometimes by the power of certain bodies. Secondly, from without: for just as he can from the air form a body of any form and shape, and assume it so as to appear in it visibly: so, in the same way he can clothe any corporeal thing with any corporeal form, so as to appear therein. This is what Augustine says (De Civ. Dei xviii, 18): "Man's imagination, which whether thinking or dreaming, takes the forms of an innumerable number of things, appears to other men's senses, as it were embodied in the semblance of some animal." This not to be understood as though the imagination itself or the images formed therein were identified with that which appears embodied to the senses of another man: but that the demon, who forms an image in a man's imagination, can offer the same picture to another man's senses.

Reply Obj. 3: As Augustine says (QQ. 83, qu. 79): "When magicians do what holy men do, they do it for a different end and by a different right. The former do it for their own glory; the latter, for the glory of God: the former, by certain private compacts; the latter by the evident assistance and command of God, to Whom every creature is subject."


FIFTH ARTICLE [I, Q. 114, Art. 5]

Whether a Demon Who Is Overcome by Man, Is for This Reason Hindered from Making Further Assaults?

Objection 1: It would seem that a demon who is overcome by a man, is not for that reason hindered from any further assault. For Christ overcame the tempter most effectively. Yet afterwards the demon assailed Him by instigating the Jews to kill Him. Therefore it is not true that the devil when conquered ceases his assaults.

Obj. 2: Further, to inflict punishment on one who has been worsted in a fight, is to incite him to a sharper attack. But this is not befitting God's mercy. Therefore the conquered demons are not prevented from further assaults.

On the contrary, It is written (Matt. 4:11): "Then the devil left Him," i.e. Christ Who overcame.

I answer that, Some say that when once a demon has been overcome he can no more tempt any man at all, neither to the same nor to any other sin. And others say that he can tempt others, but not the same man. This seems more probable as long as we understand it to be so for a certain definite time: wherefore (Luke 4:13) it is written: "All temptation being ended, the devil departed from Him for a time." There are two reasons for this. One is on the part of God's clemency; for as Chrysostom says (Super Matt. Hom. v) [*In the Opus Imperfectum, among his supposititious works], "the devil does not tempt man for just as long as he likes, but for as long as God allows; for although He allows him to tempt for a short time, He orders him off on account of our weakness." The other reason is taken from the astuteness of the devil. As to this, Ambrose says on Luke 4:13: "The devil is afraid of persisting, because he shrinks from frequent defeat." That the devil does nevertheless sometimes return to the assault, is apparent from Matt. 12:44: "I will return into my house from whence I came out."

From what has been said, the objections can easily be solved.


QUESTION 115

OF THE ACTION OF THE CORPOREAL CREATURE (In Six Articles)

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topics: dreams, sleep, and visions · magic, witchcraft, and the occult · perception and the senses

Summa Theologica, Part I (Prima Pars) · Thomas, Aquinas, Saint · 1265–1274