“Curiosity, imagination, inventiveness expand with use, like muscles,and atrophy with neglect.”

“We are not really spying, we're just satisfying our curiosity.”

“So far I had been travelling alone with my handbook and my Western Railway timetable: I was happiest finding my own way and did not require a liaison man. It had been my intention to stay on the train, without bothering about arriving anywhere: sight-seeing was a way of passing the time, but, as I had concluded in Istanbul, it was an activity very largely based on imaginative invention, like rehearsing your own play in stage sets from which all the actors had fled.”

“Implementing best practice is copying yesterday, innovation is inventing tomorrow.”

“Assyria soon discovered a painful truth: empires are like Ponzi schemes: financial frauds in which previous investors are paid returns out of new investors' deposits. The costs of holding imperial territory can only be underwritten by loot and tribute extracted by constant new conquests; empires must continue to expand if they are not to collapse.”

“It’s humbling, though, to think of all the stories that used to be, when they were at their best - before they were stories, when they were something previous, something infinitely more wonderful, brimming with potential, potent and inspired, and how they are diminished in the telling. That thing we imagine is out there cannot be captured on paper. The story is always something less than it was supposed to be, something less than when first glimpsed by the imagination.”

“You had to invent something. It's not possible to leave it blank. The mindwon't let you.”