Author: Joseph Ratzinger (Benedicto XVI), Alfons Auer, Eugen Biser, Karl Forster, Heinrich Fries, Ulrich Horst, OP, Odilo Lechner, OSB, Karl Lehmann, Karl Rahner, SJ, Leo Scheffczyk, Michael Schmaus, Rudolf Schnackenburg, Otto Semmelroth, SJ, Hans Urs von Balthasar