This book by Nicolas Le Roux, through the assassination of Henri III, plunges us into the torments of a torn France at the end of the sixteenth century, by the throes of a religious hatred without end or limit. As much history of mentalities (close in this respect the works of Lucien Febvre) as history policy (transition to absolute monarchy), this very dense, very learned and very interesting work reminds us how fanaticism is dangerous and poses indirectly queston the acceptance of drifts generated by the fundamentalists of the Faith. To meditate.