Onfray continues its against-the history of philosophy by attacking this time in the Middle Ages and thus to dissident Christians. He shows us the life of the Gnostic sects very distant Palestine patristic and Christian orthodoxy. Indeed, it is a question of Simon Magus, Carpocrates, Basilides, which advocates Epiphanes ... all very free use of the body and organize unrestrained orgies even up to make pies fetus ... Everything is related in the slightest detail and with humor and as usual with Onfray. The Catholic, Apostolic and Roman Church also takes for his rank. Then we go to the heart of the Middle Ages and found the brothers and sisters of free spirit, always in the same vein refuse to submit to the dominant ideology of the Church. Often communities of poor people who do not hesitate to make an apology for theft out of their social status and are closer in fact pantheism of Spinoza and Christianity of Jesus. Then Onfray presents three philosophers known property (Lorenzo Valla, Erasmus and Montaigne), but in a new light because for Onfray there is no doubt that these three are both authentic Christians but also avid epicureans. Fully half the book is devoted to Montaigne and a large part of these pages is devoted to his biography because you can not understand the "testing" without knowing the life of one who has "driven" and not "written". As usual for further end of the book one has a largely annotated bibliography.