This paper defends a Hegelian approach to practical constraint against two alternatives: the “constructivism” of Robert B. Pippin and the “second-naturalism” or “naturalized platonism” of John McDowell. I call attention to the notion of “nature” at work in Hegel and show how he thinks nature plays a constraining role in practical reason, though not in a way that outstrips the spontaneity of thought. I then argue for the contemporary relevance of Hegel so interpreted.