Pseudo-Dionysius the Areopagite (450–550)

Anonymous author of The Divine Names and Mystical Theology. Pseudo-Dionysius the Areopagite, Dionysius the Pseudo-Areopagite or Pseudo-Denys is the pseudonymous name used by a Syrian or Greek monk, Christian theologian and Neoplatonic philosopher of the late 5th to early 6th century, who wrote a set of works known as the Corpus Areopagiticum or Corpus Dionysiacum. Through his writing in Mystical Theology, he has been identified as the "progenitor of apophatic or negative theology."