Post-secularity is not only a new social reality characterized by the return of religion in the most bizarre and sometimes improbable forms. It is also a crisis of generally accepted models of representation of religious / secular phenomena. The post-secular turn is a turn towards understanding these new forms, a move towards a new language, a new optics that can capture the picture that is emerging before our eyes, which is both post-secular and post-religious, if we look at it from the point of view of habitual ideas about religion and the secular. The texts collected in this book are the result of more than a decade of reflection, an attempt to understand post-secularity from each of the above-mentioned sides: as a new social reality, as a new model of representation, a new language designed to understand and describe this reality.