Is it rational to be moral? How do rationality and morality fit together with being human? These questions are at the heart of David Schmidtz’s exploration of the connections between rationality and morality. This inquiry leads into both metaethics and rational choice theory, as Schmidtz develops conceptions of what it is to be moral and what it is to be rational. Revised in 2015, originally published in 1995 by Princeton University Press.