 If self-determination involves determination by my rational self, then it requires self-realization and real freedom. Here, we should remember Green’s Kantian claim that rational nature provides not only the ground of duty but also its content. Moral personality and freedom involve a will that has reasons-responsive capacities. But then self-determination should be expressed in activities that reflect and realize these rational capacities (PE §§175, 180, 199, 234, 238–39, 247, 283). Full or complete self-determination requires not just the capacity to be guided by reasons but this aretaic sense of self-determination. On Green’s view, this kind of self-determination and self-realization involve a constitutive commitment to a cosmopolitan concern for the common good.