"This is one of Barth's most important works - far more important than may appear at first sight.... Here we have not merely one great theologian taking the measure of another. That in itself would be interesting enough. But in addition to that we are here shown one great theologian clarifying and crystallizing, in conversation with another, his own ideas as to the nature of theology and of the theologian's task." -- Scottish Journal of Theology

"There is no way from us to God - not even a 'via negativa' - not even a 'via dialectica' nor 'paradoxa'. The god who stood at the end of some human way...would not be God.' This assertation, which would seem to discourage all theology, is by Karl Barth, the most prominent, prolific, and (it seems to me) persuasive of twentieth-century theologians.... As a critical theologian, Barth ranks with Kierkegaard; as a constructive one, with Aquinas and Calvin." --John Updike