Clemens Scholten (1955- ), the major contemporary authority on the works of the sixth century Christian Alexandrian philosopher John Philopon, teaches in the Catholic Theology and Philosophy departments of the University of Cologne. Earlier publications were devoted to Nag Hammadi and the Alexandrian Catechetical School. Scholten has also recently edited a work of Theodoret. Selected publications: Die alexandrinische Katechetenschule, 1995 Johannes Philoponos, De Opificio Mundi = Uber die Erschaffung der Welt [ Fontes Christiani 23/1,2,3], Brepols 1997