Alexandre Billon works in the faculty of Philosophy and Psychology at the Université Lille 3 since 2007. He had a PhD position and a postdoc from 2001 to 2006 at CRÉA (he received his PhD in 2005) and was a postdoc at the Institut Jean Nicod from 2006 to 2007. His work focuses on the articulation between our subjective, first-person point of view and the objective conception of the world. He has been drawing on philosophical psychopathology, and in particular on the study of schizophrenia, depersonalization and Cotard’s syndrome, to cast a new light on this old question. His main research areas are (self-)consciousness, the self, subjectivity, depersonalization, delusion and happiness.