89. D. Augustinus igitur, lib. 2. =super Genesim= ad litteram c. 17. =de Dæmonibus=, sic habet: “=Quædam vera nosse, partim quia subtiliore sensus acumine, partim quia subtilioribus corporibus vigent=,” et lib. 3. c. 1., “=etsi Dæmones aerea sunt animalia, quoniam corporum aereorum natura vigent=.” Et Epistola 115. ad Hebridium affirmat, eos esse “=animantia aerea, seu ætherea acerrimi sensus=.” Et =de Civit. Dei= lib. 11. c. 23., affirmat “=Dæmonem pessimum habere corpus aereum=.” Et lib. 21. c. 10. scripsit: “=Sunt sua quædam etiam Dæmonibus corpora, sicut doctis hominibus visum est, ex isto aere crasso et humido=.” Et lib. 17. c. 23. ait “=se non audere definire, an Angeli corpore aereo, ita corporati possint etiam hanc pati libidinem, ut quomodo possint, sentientibus fœminis misceantur=.” Et in Enarrat. in Psal. 85. ait “=corpora beatorum futura post resurrectionem, qualia sunt corpora Angelorum=;” et in Enarrat. in Psal. 45. ait “=corpus Angelicum inferius esse anima=.” Et lib. =De Divinit. Dæmonum=, passim per totum, maxime c. 23., docet “=Dæmones subtilia habere corpora=.” 89. St Austin, then, in his _Commentary on Genesis_, book 2, ch. 17, writes as follows concerning Demons: “_They have the knowledge of some truths, partly through the more subtle acumen of their senses, partly through the greater subtilty of their bodies_”, and, book 3, ch. 1: “_Demons are aerial animals, because they partake of the nature of aerial bodies._” In his Epistle 115 to Hebridius, he affirms that they are “_aerial or ethereal animals, endowed with very sharp senses_.” In the _City of God_, book 11, ch. 13, he says that “_the worst Demon has an aerial body_”. Book 21, ch. 10, he writes: “_The bodies of certain Demons, as has been believed by some learned men, are even made of the thick and damp air which we breathe._” Book 15, ch. 23: _“He dares not define whether Angels, with an aerial body, could feel the lust which would incite them to communicate with women._” In his commentary on Psalm 85, he says that “_the bodies of the blessed will, after resurrection, be like unto the bodies of Angels_;” Psalm 14, he observes that “_the body of Angels is inferior to the soul_.” And, in his book _De Divinit. Dæmonum_, he every-where, and especially ch. 23, teaches that “_Demons have subtle bodies_”.