An Historical Summary of Angelic Hierarchies from Part VII: The “Seven” Thrones in In Operibus Sigillo Dei Aemeth by David Richard Jones.

“St. Denis would still have been standard Thomist theology for Dante and therefore the a priori schema of divine order. Dante’s understanding also indicates the brightest literary fluorescence of the Italian Renaissance and the growing influence of the rediscovery of the Greek philosophers, setting the stage for the radical influence that the discovery of the Corpus Hermetica would exert.” [via]