Equal Rites (just a few out of a mountain, yes I'm just flipping through random pages and hopefully these don't have any spoilers)-

"He came walking through the thunderstorm and you could tell he was a wizard, partly because of the long cloak and carven staff but mainly because the raindrops were stopping several feet above his head, and steaming."

"'Your bees,' she went on, 'is your mead, your wax, your bee gum, your honey. A wonderful thing is your bee. Ruled by a queen, too,' she added with a touch of approval."

"The light of the Discworld was old and slow and heavy. From the cottage Granny watched as it drained off the mountains, flowing in golden rivers through the forest. Here and there it pooled in hollows until it faded and vanished."

"'It's all,' Granny paused, and dredged up her favorite word to describe all she despised in wizardry, '-jommetry.'"

"It was quite amazing that a stall so many people didn't know was there should be quite so popular." 

"Hilta laughed. Esk quite like the sound. Granny never laughed, she merely let the corners of her mouth turn up, but Hilta laughed like someone who had thought hard about Life and had seen the joke."

"Granny, meanwhile, was two streets away. She was also, by the standards of other people, lost. She would not see it like that. She knew where she was, it was just that everywhere else didn't."

"The average human, on the other hand, thinks about all sorts of things around the clock, on all sorts of levels, with interruptions from dozens of biological calendars and time-pieces. There's thoughts about to be said, and private thoughts, and real thoughts, and thoughts about thoughts, and a whole gamut of subconscious thoughts. To a telepath, the human head is a din. It is a railway terminus with all the Tannoys talking at once. It is a complete FM waveband - and some of those stations aren't reputable, they're outlawed pirates on forbidden seas who play late-night records with limbic lyrics."

"Gander considered that gnolls didn't look any better inside than out. He hated their guts."

"He was stupid, yes, in the particular way that clever people are stupid, and maybe he had all the tact of an avalanche and was as self-centered as a tornado, but it never would've occurred to him that children were important enough to be unkind to."