God and the City, based on the Aquinas Lecture delivered at the University of Dallas in 2022, aims to think about politics ontologically. In other words, it seeks to reflect on, not some political theory or other, nor on the legitimacy of political action or the distinctiveness of particular regimes, but on the nature of political order as such, and how this order implicates the fundamental questions of existence, those concerning man, being, and God. Aristotle, and Aquinas after him, identified metaphysics and politics as “architectonic” sciences, since each concerns in some respect...