it seemed to agree with their Christology. This dating was disputed by Hypatius of Ephesus, who met the monophysite party during the 532 meeting with Emperor Justinian I; Hypatius denied its authenticity on the ground that none of the Fathers or Councils ever cited or referred to it. Hypatius condemned it along with the Apollinarian texts, distributed during the Nestorian controversy under the names of Pope Julius and Athanasius, which the monophysites entered as evidence supporting their position. The first defense of its authenticity is undertaken by John of Scythopolis, whose commentary, the Scholia (), on the Dionysian Corpus constitutes the first defense of its apostolic dating, wherein he specifically argues that the work is neither Apollinarian nor a forgery, probably in response both to monophysites and Hypatius—although even he, given his unattributed citations of Plotinus in interpreting Dionysius, might have known better. Dionysius' authenticity is criticized later in the century, and defended by Theodore of Raithu; and by the 7th century, it is taken as demonstrated, affirmed by both Maximus the Confessor and the Lateran Council of 649. From that point until the Renaissance, the authorship was less questioned, though Thomas Aquinas, Peter Abelard and Nicholas of Cusa expressed suspicions about its authenticity; their concerns were generally ignored. The Florentine humanist Lorenzo Valla (d. 1457), in his 1457 commentaries on the New Testament, did much to establish that the author of the Corpus Areopagiticum could not have been St. Paul's convert, though he was unable to identify the actual historical author. William Grocyn pursued Valla's lines of textual criticism, and Valla's critical viewpoint of the authorship of the highly influential Corpus was accepted and publicized by Erasmus from 1504 onward, for which he was criticized by Catholic theologians. In the Leipzig disputation with Martin Luther, in 1519, Johann Eck used the Corpus, specifically the Angelic Hierarchy, as argument for the apostolic origin of papal supremacy, pressing the Platonist analogy, "as above, so below". During the 19th century modernist Catholics too came generally to accept that the author must have lived after the time of Proclus. The author became known as 'Pseudo-Dionysius the Areopagite' only after the philological work of J. Stiglmayr and H. Koch, whose papers, published independently in 1895, demonstrated the thoroughgoing dependence of the Corpus upon Proclus. Both showed that Dionysius had used, in his treatise on evil in Chapter 4 of The Divine Names, the De