Terry Pratchett, The Colour of Magic (London: Corgi Books, 1985; 1983), p. 242:
‘Sometimes I think a man could wander across the disc all his life and not see everything there is to see,’ said Twoflower. ‘And now it seems there are lots of other worlds as well. When I think I might die without seeing a hundredth of all there is to see it makes me feel,’ he paused, then added, ‘well, humble, I suppose. And very angry, of course.’