De Coelesti Hierarchia
（重定向自Celestial Hierarchy）
De Coelesti Hierarchia (Greek: Περὶ τῆς Οὐρανίας Ἱεραρχίας, "On the Celestial Hierarchy") is a Pseudo-Dionysian work on angelology, written in Greek and dated to ca. the 5th century CE; it exerted great influence on scholasticism and treats at great length the hierarchies of angels.