Hans Urs von Balthasar (1905-1988) is one of the most prolific, creative and wide-ranging theologians of the twentieth century who is only now coming into prominence. Because of his range of competencies and the volume of his output, Balthasar has never been an easily-categorized theologian. This Companion brings together a wide range of theologians who assess his work which ranks with that of Origen, John Calvin, and Karl Barth.