Abstract

This article considers aspects of Philippa Foot’s theory of naturalist realist metaethics. It addresses the question of whether human nature can function as a direct source of normativity or whether it is more of a metanormative framework that is open to norm-creation based on the agent’s rational volitional activity. This gives rise to the question of whether the source of moral normativity is not in fact the agent’s practical rationality since natural facts may conflict and therefore cannot constitute a direct guide for the articulation of moral norms. Our interpretation is based primarily on Foot’s Natural Goodness, and identifies the tensions between the broader and narrower meanings of the conception of human nature. In the first step we discuss the broader meaning of human nature. In the second we consider the narrower meaning of human nature, practical rationality. In conclusion we show that in its broader sense human nature cannot function as a proper source of moral normativity; rather, it is a metanormative framework for making moral judgements. Within this framework practical rationality operates as human nature in the narrower sense and only it can be considered the source of moral normativity.