A dejected Usbek is apparently resigned to the necessity of returning, with little hope, to Persia; on 4 October 1719 he laments: "I shall deliver my head to my enemies" (147 He nevertheless does not do so: late in 1720 he is still in Paris, for letters 134–137 (140–145), which contain the whole history of Law's "System," are in fact posterior to Roxane's last missive (dated 8 May 1720), which he must already have received – the usual time for delivery being about five months – when he writes the latest in date of his own (supplementary letter 8 and letter 138 [145 and 146), in October and November 1720.