“Sovereign is he who decides the exception.” Among serious students of political philosophy, at least on the Right, these may be the most famous words of the twentieth century. That sentence opens this work, Political Theology, which consists of four linked essays, bound by the theme that most exercised Carl Schmitt in the early 1920s—the edge cases of sovereignty. In the post-World War II decades, such questions seemed very remote and theoretical, part of the turmoil of a benighted age we had left behind. But we were wrong, about all of it, and Schmitt was right, that this topic is universal and timeless. Thus, from Schmitt we can learn much that we can be sure will be directly applicable to the 2020s.