In Christian ethical and anthropological discourse, the concept of “human nature” represented one of the main criteria from which norms for social and individual ethics derived. The age of Enlightenment brought about a serious criticism of this concept refusing its metaphysical justification. New opinions prevailed in philosophical and scientific discourse of that time. They rejected existence of common anthropological determinants and supported a thesis claiming that people are primarily formed in society and that the concept of “human nature” entails a risk of abuse of power by promoting only one view of the human being. The presented paper studies the relevance of this concept today and examines it from the perspective of Jonathan Haidt’s social psychology, which, as the author claims, contributes to better understanding of human nature. Standard metaphysical and theological definitions of human nature that prevailed mostly in Christian discourse needs to be extended by including findings from social and exact sciences and use them as a suitable medium for a dialogue in a pluralistic environment, and push the limits of our knowledge about humans.