Epistemic Barriers and Practical Dualism

Here we will argue that Henry Sidgwick’s Dualism of Practical Reason, the paired imperative of being egoistic and/or utilitarian, follows from the epistemic barriers that arise when giving credence to skepticism about the external world, and particularly skepticism about other minds, and skepticism about reincarnation. We will argue that this is true whether we begin with the premises of universal utilitarianism or egoism.