“But ideal cities are very much the product of their own ages. Designed as complete urban statements, they bear the unmistakable imprint of their own culture and world view in every street and building. And yet to be successful a city has to be open to continuous development, free to evolve and grow with the demands of new times. Like science fiction accounts of the future, ideal cities quickly become outmoded.”

“In great cities, spaces as well as places are designed and built: walking, witnessing, being in public, are as much part of the design and purpose as is being inside to eat, sleep, make shoes or love or music. The word citizen has to do with cities, and the ideal city is organized around citizenship -- around participation in public life.”

“The catalogue of forms is endless: until every shape has found its city, new cities will continue to born. When the forms exhaust their variety and come apart, the end of cities begins.”

“Planning is for the world's great cities, for Paris, London, and Rome, for cities dedicated, at some level, to culture. Detroit, on the other hand, was an American city and therefore dedicated to money, and so design had given way to expediency.”

“These cities grew in approximately the same places as our cities do now, however different the shape of the continents was. There was even a New York that in some way resembled the New York familiar to all of you, but was much newer, or, rather, more awash with new products, new toothbrushes, a New York with its own Manhattan that stretched out dense with skyscrapers gleaming like the nylon bristles of a brand-new toothbrush.”

“Ideal mankind would abolish death, multiply itself million upon million, rear up city upon city, save every parasite alive, until the accumulation of mere existence is swollen to a horror.”