This one is from Karl Barth on heresy. Barth was asked this question in one of his discussions with English-speaking students in Basel about the chief heresies in his mind when he wrote the CD in 1932. He answered:
If I had to rewrite this volume, I might not be so polemical, although the heresies would be the same. I might have a more irenic spirit. I could look out on the present situation and ask: what should the Christian proclamation be in view of all these denominations in Ecumenical movement, etc? But maybe the way I said it is clearer. Liberalism is coming back today, especially in Europe. Look at Rudolf Bultmann; he stems from Father Schleiermacher! And look at the situation in Switzerland! And the old snake in Rome is still there! I might have mentioned a third heresy: Fundamentalism, Orthodoxy. In 1932 I did not know the Fundamentalists so well. The Fundamentalists says he knows the Bible, but he must have become master over the Bible, which means master over revelation... I consider it just another kind of natural theology: a view of the modern man who wants to control revelation.
John D. Godsey, Karl Barth's Table Talk, 40-41.