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"Others are accustomed to calling upon evil demons, binding them by the power of divine names; this is the branch of necromancy known as 'evil-doing.' Others turn to 'theurgy,' which is supposedly governed by good angels and divine power, though it is very often practiced under the names of God and the angels through the deceptive illusions of demons." original: "Alii daemones malos virtute divinorum nominum adjuratos, advocare solent, atque haec est illa Necromantiae species quae dicitur malefica: vel in Theurgiam, quae quasi bonis Angelis, divinoque numine regatur (ut nonnulli putant) cum saepissime tamen sub Dei et Angelorum nominibus malis Daemonum illusionibus peragatur." This quote is likely from Heinrich Cornelius Agrippa's "De Occulta Philosophia."