Thomas Aquinas and Dionysian Ecclesiastical Hierarchy

The thought of Thomas Aquinas is rightly understood to be hierarchical, but the word hierarchy is understood diversely across time and place, and important readers of Thomas have praised or blamed him for being less hierarchical than his contemporaries. Early modern critique of hierarchy with its political edge often dominates understanding of the notion, but such critique stems from medieval controversies over religious perfection and sacramental life, which in turn echo the monastic polemics of Pseudo-Dionysius, the probable inventor of the term hierarchy. The massive influence of Dionysius made him a contested authority in Thomas's time, and in his battles with secular clergy the Dominican theologian shows himself a more careful interpreter of the pseudo-Areopagite than his contemporaries, who purported to defend hierarchy against the mendicants. This study presents the reading method of Aquinas as a contemplative project, motivated and delineated by the mendicant controversies of the thirteenth century, and undertaken alongside the obscure Dionysius within their common pursuit of religious perfection.