Perhaps I owe the readers of these e-mails (which are also Realistic Living blog posts) some information on who I am as a Christian theologizer. I am certainly not a great scholastic— a theologian in the company of Rudolf Bultmann, whom I consider to be the most important Christian biblical scholar and theologian of the last two centuries. I also include Paul Tillich, H. Richard Niebuhr, and Dietrich Bonhoefer in my smallest circle of great recent Christian theologians. All four of these scholarly luminaries lean strongly toward what Tillich calls the “Protestant principle”—by which he means the perpetual critique of all religious and cultural assertions. These four theologians are also “catholic” thinkers in the sense of fully honoring the whole history of Christian expression. I am especially indebted to Paul Tillich and H. R. Niebuhr for my love of history and my perspective on church history.