Stories of imagination tend to upset those without one.

I’m a witch. It’s what we do. When it’s nobody else’s business, it’s my business.

Humans can think inhuman thoughts.

And then there were cats, thought Dog. He'd surprised the huge ginger cat from next door and had attempted to reduce it to cowering jelly by means of the usual glowing stare and deep-throated growl, which had always worked on the damned in the past. This time they had earned him a whack on the nose that had made his eyes water. Cats, Dog considered, were clearly a lot tougher than lost souls. He was looking forward to a further cat experiment, which he planned would consist of jumping around and yapping excitedly at it. It was a long shot, but it just might work.

Poets have tried to describe Ankh-Morpork. They have failed. Perhaps it's the sheer zestful vitality of the place, or maybe it's just that a city with a million inhabitants and no sewers is rather robust for poets, who prefer daffodils and no wonder. So let's just say that Ankh-Morpork is as full of life as an old cheese on a hot day, as loud as a curse in a cathedral, as bright as an oil slick, as colourful as a bruise and as full of activity, industry, bustle and sheer exuberant busyness as a dead dog on a termite mound.

I don't see what's so triffic about creating people as people and then gettin' upset cos' they act like people", said Adam severely. "Anyway, if you stopped tellin' people it's all sorted out after they're dead, they might try sorting it all out while they're alive.

I've often felt depressed; everyone feels depressed.