This book will become a classic of political philosophy. Despite the need to go beyond his writing difficult and sometimes off-putting style, argumentation is mostly clear and securely connects from one section to another. This is a political story, made "telescope", religion understood as a historical phenomenon. The approach is innovative, the system is consistent and prégnant future avenues of research and discussion. Today we can not speak of modernity or the evolution of religion bypassing this monumental work. Gauchet explains its contention that Christianity is the religion of "exit from religion". He carried in him, from his appearance, the ability of many to deepen the dualities between the terrestrial and celestial worlds and thus create the space where modernity is installed. The realization of this possibility would explain the separation of the social and religious and loss of importance of religion in our lives. The thesis itself is worth thinking about - the book is worth investigating.