That's old Twoflower, Rincewind thought. It’s not that he doesn’t appreciate beauty, he just appreciates it in his own way. I mean, if a poet sees a daffodil he stares at it and writes a long poem about it, but Twoflower wanders off to find a book on botany. He just looks at things, but nothing he looks at is ever the same again. Including me, I suspect.