The architect had been incarcerated, quite mad, seven years after Perdido Street Station was completed. He was a heretic, it was said, intent on building his own god.

Five enormous brick mouths gaped to swallow each of the city’s trainlines. The tracks unrolled on the arches like huge tongues. Shops and torture chambers and workshops and offices and empty spaces all stuffed the fat belly of the building, which seemed, from a certain angle, in a certain light, to be bracing itself, taking its weight on the Spike, preparing to leap into the enormous sky it so casually invaded.

Isaac did not look with eyes clouded by romance. He saw flight wherever he looked in the city (his eyes were swollen: behind them buzzed a brain wired with new formulae and facts all furnished to slip gravity’s clutches), and he saw that it was not an escape to a better place. Flight was a secular, profane thing: simply a passage from one part of New Crobuzon to another.

He was cheered by this. He was a scientist, not a mystic.

Isaac lay on his bed and gazed out of his window. He followed one flying speck after another with his eyes. Scattered around him on the bed, spilling onto the floor like a paper tide, were books and articles, typewritten notes and long sheaves of his excited scrawl. Classic monographs nestled under the musings of cranks. Biology and philosophy jostled for space on his desk.

He had sniffed his way along a contorted bibliographical trail like a bloodhound. Some titles could not be ignored: On Gravity or The Theory Of Flight. Some were more tangential, like The Aerodynamics Of The Swarm. And some were simply whims that his more respectable colleagues would surely frown at. He had yet, for example, to browse the pages of The Dweomers That Live Above The Clouds And What They Can Tell Us.

Isaac scratched his nose and sipped the beer balancing on his chest through a straw.

Only two days working on Yagharek’s commission, and the city was completely changed for him. He wondered if it would ever change back.

He rolled onto his side, rummaged around underneath him to shift the papers that were making him uncomfortable. He tugged free a collection of obscure manuscripts and a sheaf of the heliotypes he had taken of Teafortwo. Isaac held those prints in front of him, examined the intricacies of the wyrmen musculature that he had made Teafortwo show off.

Hope it’s not too long, Isaac thought.

He had spent the day reading and taking notes, grunting politely when David or Lublamai yelled greetings or questions or offers of lunch up to him. He had munched some bread and cheese and peppers which Lublamai had dumped on his desk in front of him. He had gradually shed layers of clothing as the day grew warmer and the little boilers on all the equipment heated the air. Shirts and kerchiefs littered the floor by his desk.