In addition to being contemplated in the classical disciplines of anthropology, human sociality has been subjected to scientific examination in the natural and social sciences. This book offers a substantial discussion of empirical research programs within current economics (experimental and neuroeconomics), with special regard to the themes of reciprocity and altruism. These themes are discussed from a philosophical perspective informed by phenomenology and hermeneutics, and linked to theories of conflict, recognition and alterity in social philosophy, which are used to show the limitations of the purely science-based naturalistic approaches in economics. Finally, the book introduces the concept of the neighbor in Christian theology and shows how this figure brings a new perspective to the examination of human sociality.