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Lunatics and moon

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Often appears with: spiritual substances · religious persecution and toleration · necromancy · miracles and divine intervention · fate, destiny, and necessity · demons and stars

Usually: argument (1) · detachment (1) · skepticism (1)

Summa Theologica, Part I (Prima Pars) secondary

Thomas, Aquinas, Saint · c. 1265–1274
PART I ("Prima Pars") > Act; in treating of which subject Boethius employs that phrase (De (264/290)

On whether heavenly bodies act on demons, Thomas rejects the idea that demons are merely forces of the stars or bodily-air animals, concluding demons are spiritual substances not subject to heavenly influence, though they may use bodily conditions.

Whether Heavenly Bodies Can Act on the Demons? Objection 1: It would seem that heavenly bodies can act on the demons. For the demons, according to certain phases of the moon, can harass men, who on that account are called lunatics, as appears from Matt. 4:24 and 17:14. But this would not be if they were not subject to the heavenly bodies. Therefore the demons are subject to them. Obj. 2: Further, necromancers obser…