“...smoke twisting amongst the lights and turning the air a desolate blue, the colour of dead hopes and lost chances.”

“If the Creator had said, "Let there be light" in Ankh-Morpork, he'd have got no further because of all the people saying "What colour?”

“It was so loud and so deep, it wasn't really sound at all, just something that turned the air hard and then hit you with it.”

“There is a lot of folklore about equestrian statues, especially the ones with riders on them. There is said to be a code in the number and placement of the horse's hooves: If one of the horse's hooves is in the air, the rider was wounded in battle; two legs in the air means that the rider was killed in battle; three legs in the air indicates that the rider got lost on the way to the battle; and four legs in the air means that the sculptor was very, very clever. Five legs in the air means that there's probably at least one other horse standing behind the horse you're looking at; and the rider lying on the ground with his horse lying on top of him with all four legs in the air means that the rider was either a very incompetent horseman or owned a very bad-tempered horse.”

“Ella turned to the fireplace where a blackened kettle hung over what Granny Weatherwax always called an optimist's fire: two logs and hope.”

“It would take a lot to faze a copper from the Met.It would take, for example, a huge, battered car that was nothing more nor less than a fireball, a blazing, roaring, twisted metal lemon from Hell, driven by a grinning lunatic in sunglasses, sitting amid the flames, trailing thick black smoke, coming straight at them through the lashing rain and the wind at eighty miles per hour.That would do it every time.”

“The shortest unit of time in the multiverse is the New York Second, defined as the period of time between the traffic lights turning green and the cab behind you honking.”