 The subject matter of Wolff’s practical philosophy is restricted to those things that have to do with human action. In Wolff’s Latin texts, practical philosophy is divided into four main disciplines: universal practical philosophy, natural law, politics, and moral philosophy. And just as ontology purportedly provides the foundational underpinnings for the disciplines of “special metaphysics” in the theoretical realm, universal practical philosophy plays an analogous role for the disciplines of natural law, politics, and moral philosophy in the practical realm.