“The trouble was that he was talking in philosophy but they were listening in gibberish.”

“He felt that the darkness was full of unimaginable horrors - and the trouble with unimaginable horrors was that they were only too easy to imagine...”

“Jeremy tried to be an interesting person. The trouble was that he was the kind of person who, having decided to be an interesting person, would first of all try to find a book called How to Be An Interesting Person and then see whether there were any courses available.”

“Last night there seemed to be a chance. Anything was possible last night. That was the trouble with last nights. They were always followed by this mornings.”

“For the first time in her life Granny wondered whether there might be something important in all these books people were setting store by these days, although she was opposed to books on strict moral grounds, since she had heard that many of them were written by dead people and therefore it stood to reason reading them would be as bad as necromancy. Among the many things in the infinitely varied universe with which Granny did not hold was talking to dead people, who by all accounts had enough troubles of their own.”

“Everyone says it's going to be Snapcase at the palace. He listens to the people.""Yeah, right," said Vimes. And I listen to the thunder. But I don't do anything about it.”

“Rincewind trudged back up the beach. "The trouble is," he said, "is that things never get better, they just stay the same, only more so.”