Title: The physics of angels
Subjects: Physics, Miscellanea, History of doctrines, Angels, Photons, Christianity, Hildegard, saint, 1098-1179, Thomas, aquinas, saint, 1225?-1274, Pseudo-dionysius, the areopagite
People: Pseudo-Dionysius the Areopagite, Hildegard Saint (1098-1179), Thomas Aquinas, Saint (1225?-1274)