This article is an approach to the concept of human nature in Juan Manuel Burgos, who analyzes three positions that are in conflict: naturalism, culturalism and modernism; delving into the classical-Thomistic tradition, divided between Thomism and personalism. In this way, the metaphysical concept of human nature presented by Thomism and the criticisms that arise from culturalist thought are analyzed. However, the author not only describes the conflict between the classical tradition and culturalism, but also proposes a new understanding of the category of human nature from personalism, with the intention of freeing it from the Greek burden, and at the same time contributes to the development of an anthropology centered on the person and his humanity.