How we cite our quotes: (Story.Chapter.Paragraph)
Quote #1
"Stranger," said Rincewind levelly. "If you stay here you will be knifed or poisoned by nightfall. But don't stop smiling, or so will I." "Oh, come now," said [Twoflower], looking around. "This looks like a delightful place. A genuine Morporkean tavern. I've heard so much about them, you know. All these quaint old beams. And so reasonable, too." (1.4.41-42)
Perspective is an important part of awe and amazement, as well as the relationship between Twoflower and Rincewind. Where one sees adventure, the other sees horror. Where one sees beauty, the other sees dread. Where one sees blue, the other sees a purplish-type color.
Quote #2
Twoflower added: "A real brawl! Better than anything I'd imagined! Do you think I ought to thank them? Or did you arrange it?" (1.21.15)
Again, it's all about perspective, though we have to admit that it's hard to really jive with Twoflower's perspective on this one. Traven brawls can get pretty nasty with or without the addition of trolls.
Quote #3
The Discworld offers sights far more impressive than those found in universes built by Creators with less imagination but more mechanical aptitude. (1.Prologue.1)
We get the sneaking suspicion he's thinking of our universe there. With that said, Rincewind might find as much awe and amazement in our universe as Twoflower finds in their own.