SELECTED BIBLIOGRAPHY Primary sources: Heraclitus: Fragments The Bible: esp. Genesis, Exodus, Numbers, Joel, Matthew, Acts, Romans, Hebrews Plato: Symposium, Euthydemus, Phaedo, Phaedrus Plotinus: Sixth and Eighth Ennead Augustine: City of God, On the Trinity Hugh of St. Victor: De sacramentis christianae fidei Abbot Suger: De Administratione Nicholas Verdunensis: Altar of Verdun Secondary sources: H. Buschhausen "Der Verduner Altar" A. Weisgerber "Studien zu Nikolaus von Verdun und der rheinischen Goldschmiedekunst des zwoelften Jahrhunderts" J. Danielou "Sacramentum Futuri" E. Panofsky "Abbot Suger on the Abbey of St. Denis" M.M. Gauthier "Emaux du moyen age occidental" J. Pepin "A Propos de l'histoire de l'exegese allegorique: l'absurdite, signe de l'allegorie" J. Pepin "S. Augustin et la fonction protreptique de l'allegorie" A. Mitterer "Die Entwicklungslehre Augustins" Peter Brown "Augustine of Hippo" Charles Kahn "The Art and Thought of Heraclitus"