Demonic Phenomena
This chapter considers a variety of phenomena by which demons are perceived, focusing upon the more wondrous or miraculous. For Augustine, demons have power only over bodies and appearances, not human understanding and will. This restricts demonic power to the natural, causal limitations of corporeal things, which they only know externally—scientifically, as it were—and not contemplatively in God as the angels do. It also makes it possible for the saints to resist them with virtue, by which demons are made the ‘sport of angels’. This is demonstrated by a review of a variety of demonic phenomena that appear in Augustine’s writings including divination, prodigies, signs, temptation, and possession, which are analysed according to the two basic categories of deception and affliction. The chapter ends with a comparison of angelic and demonic miracles. Occasionally Augustine claims that angelic miracles have greater power than those of demons, but it is more essential in his work to differentiate them not according to their perceived power but by their meaning. The self-love in which they fell is the self-love to which all the works of demons ultimately refer and by which they are identifiable in those works.