“Sometimes she felt she would like to engulf him like a trap-lantern, and never share him with anyone or anything else again, not even the light. Even his obsession with ruling Caverna pained her, as if the city were a woman, and a rival.”

“It draws you in. You twist your mind into new shapes. You start to understand Caverna . . . and you fall in love with her. Imagine the most beautiful woman in the world, but with tunnels as her long, tangled, snake-like hair. Her skin is dappled in trap-lantern gold and velvety black, like a tropical frog. Her eyes are cavern lagoons, bottomless and full of hunger. When she smiles, she has diamonds and sapphires for teeth, thousands of them, needle-thin.""But that sounds like a monster!" "She is. Caverna is terrifying. This is love, not liking. You fear her, but she is all you can think about.”

“This was why he had become a master thief, to achieve this theft of thefts, this masterpiece of larceny. All the time, fascinating and terrible Caverna had been his goal. Whilst other Cartographers had sighed in vain after the beauty of her treacherous geography, he had decided to win her with cunning and threats. All along Caverna had been his opponent and his prize, and she had never suspected it for a moment. He had fooled her, fought her and defeated her. She would be furious, no doubt, would hate him, rail against him and look for ways to destroy him, but he had outmanoeuvred her and now she had no choice but to play things his way. Unlike her earlier favourites, he was her lord, not a plaything to be tossed aside when she was bored. And yet, for the first time in ten years, he found himself at something of a loss. I have succeeded. I have won. I rule the city. I wonder what I was planning to do with it?”

“She’s got us, she’s got us all. Caverna. She doesn’t want to let us go. Do you know what she’s like? A huge trap-lantern with us inside her, digesting us really, really slowly, and not wanting to let any of us go. Maybe that’s the worst kind of prison – not knowing you’re in a prison. Because then you don’t fight to get out.”

“She had told Erstwhile too much in the past, and thus he knew that occasionally she did go crazy. Sometimes it was when she felt particularly trapped or hopeless, or when the tunnels were unusually dark or stuffy, or when she got stuck in a crawl-through. Sometimes it happened for no obvious reason at all. She would feel a terrible panic tightening her chest and giving her heart a queasy lollop, she would be fighting for breath . . . and then she would be recovering somewhere, shuddering and sick, devastation around her and her fingernails broken from clawing at the rock walls and ceilings.”

“In Caverna lies were an art and everybody was an artist, even young children.”

“Has it ever occurred to you that maybe you’re sane? That you’ve always been sane? That perhaps you’re the sanest person in the city?" "I hope not," whispered Neverfell. "Because, if I’m sane, then there’s something wrong with Caverna, something horrible and sick, and nobody else has noticed. If I’m sane, then we shouldn’t be sitting around talking – we should all be clawing our way out as fast as we can." "Oh, I don’t think she’d like that," the Kleptomancer remarked, with a hint of affection in his voice. "She needs us. Without us, there is no her, after all. She is the city, not the tunnels, and so she does everything she can to keep us down here. Sometimes I even wonder whether it is only possible to create True Delicacies here because she gives them their power, as a bribe to stop us leaving. When the Grand Steward declared that nobody was allowed to enter or leave the city, I believe he became her chosen beloved. I will tell you something else, though I cannot prove it. The city grows, and not just through the effort of pick and shovel. She has been stretching, spreading and contorting to make room for us all, and I think that is why geography no longer makes sense.”