This chapter discusses a notion that is in itself appropriate to engage a neuroscientist, a philosopher and a theologian, or somebody concerned with religion, in a truly interdisciplinary dialogue. It describes the notion of person from a phenomenological standpoint. Many sciences do not encounter the problem of the person understood from the viewpoint of subjectivity in their field of study but neurosciences cannot avoid that consideration, even if only to do away with it. Science may be made of publicly accessible experiences, but that would only mean that some aspects of reality, e.g. subjectivity, lie beyond the scope of science. One of the most remarkable discussions on the philosophy of neurosciences is the recent debate between the phenomenologist Paul Ricoeur and the neuroscientist Jean-Pierre Changeux. The chapter presents an important consequence for a religious view. It finally shows that religion and theology can only profit from a philosophy built upon the experience of the person by and of herself.