"For, as he claimed, another important difference between tourist and traveller is that the former accepts his own civilization without question; not so the traveller, who compares it with others, and rejects those elements he finds not to his liking."
Paul Bowles, an inveterate traveller who spent more than half of his life in self-imposed exile, far away from his native America, might have been describing himself here. Far from accepting "his own civilization", Bowles, like his character Port, is famous for rejecting it, shunning New York and the literary intelligentsia in favour of the deserts and souks of North Africa, immersing himself in and capturing for generations its culture. Few lives can have better illustrated this distinction between tourist and traveller than his own. Bowles defined himself by it and as a result became a magnet for all those envisioning life away from the mainstream.
See also p.10: "Whereas the tourist generally hurries back home at the end of a few weeks or months, the traveller, belonging no more to one place than to the next, moves slowly, over periods of years, from one part of the earth to another." Neither Port Moresby or Paul Bowles himself ever went "back home".