One of the typical philosophical questions is that which asks for man. Since ancient times, the issue has been addressed philosophically; however, not only philosophically. Several disciplines and sciences have investigated in order to find out what or who is man. This paper suggests the basis to think or rethink man in a metaphysical key, beyond those keys that think him, primarily, from his animality. Philosophical anthropology should be, over all, philosophical, therefore it has to be justified by itself.