"A great book ... this imposing synthesis that will remain a source of inspiration once much of today's theological production is forgotten." Joseph Ratzinger in Theologische Revue "In this book lies explosive material for many a theological encrustation, ignition material for chain reactions of new thinking in the church." Frankfurter Allgemeine Zeitung "That Rahner thinks in a splendidly modern way, in that he really processes scientific findings and beyond everything individual also considers natural and world history, cannot be thanked enough for that." Neue Züricher Zeitung.