Sociology is currently marked by internal fragmentation and conflicts with the other behavioral sciences. Whereas the hard sciences are united by a common explanatory model based on fundamental particles, the behavioral sciences fail to establish a unifying theoretical framework that might reduce the pulverisation of knowledge. This article attempts to establish whether sociology, and the behavioral sciences in general, can be adequately enclosed within a common underlying theory based on Darwinian evolutionism, on complexity theory and on the developments in neuroscience. The aim is to sketch a unified theoretical framework that can then be applied within different disciplinary fields in order to tackle their distinct explanatory goals. The question I wish to address is whether theories and methods exist that are able to bridge across the social and natural sciences, enabling the development of a naturalised epistemology.