How should law, morality, and religion interact in America today? The varied strands of natural-law reflection on common law offer resources and warnings to natural-law proponents and critics alike. In reflecting on the stories of the preceding chapters, it becomes clear that common law is not simply “judge-made law,” regardless of today’s prevailing definition, nor is natural law necessarily divorced from human lawmakers, judges included. Common law and natural law are co-constitutive and, in at least some ways, inseparable in American history. Blackstone formed the system of modern common law, after all, in reference to natural law’s rights and principles. Story treated natural law not merely as a source of common law’s authority but as its structuring spirit: justifying specific enactments, defenses, and punishments, and coordinating moral and civic obligations. And yet, “common law” and “natural law” are mutable: shifting in their perceived purposes, always enmeshed in the presuppositions of a particular time and place, even as natural law is attested by some as law existent beyond interpretation. The Puritans’ natural law was a lodestar in a fallen world. The Revolutionaries’ celebrated our rational capacities. What, if anything, is natural law today?