According to Mandeville's Travels, a spring in the very centre of the Garden of Paradise gives rise to four great rivers from which all the fresh water in the world ultimately comes. This chapter contextualises Mandevillian geography within the still- authoritative, though increasingly problematic, geography of scripture. Even the most intrepid of readers would thus be discouraged from setting out to find the source of any of the four rivers of Paradise, since they would be no more likely to succeed in the attempt than the author himself was. Before turning to the Bible to examine the origin of the belief in an Earthly Paradise, the chapter makes another remark about the English text of Mandeville's Travels. The Book of Genesis, with its image of the Earthly Paradise and the four rivers, is clearly a major source of inspiration for the same i.e. in the Book of Sir John Mandeville.