Lettres persanes (Persian Letters) is a literary work by Charles de Secondat, baron de Montesquieu, recounting the experiences of two Persian noblemen, Usbek and Rica, who are traveling through France. In 1711 Usbek leaves his seraglio in Isfahan to take the long journey to France, accompanied by his young friend Rica. He leaves behind five wives in the care of a number of black eunuchs, one of whom is the head or first eunuch. During the trip and their long stay in Paris (1712–1720), they comment, in letters exchanged with friends and mullahs, on numerous aspects of Western, Christian society, particularly French politics and Moors, ending with a biting satire of the System of John Law. Over time, various disorders surface back in the seraglio, and, beginning with Letter 139, the situation there rapidly unravels.