Backward cities, or younger cities, or newly forming cities in supply regions, have to develop to a great extent on one another's shoulders. This is one of the terrible things about empires.

Neighborhood is a word that has come to sound like a Valentine. As a sentimental concept, 'neighborhood' is harmful to city planning. It leads to attempts at warping city life into imitations of town or suburban life. Sentimentality plays with sweet intentions in place of good sense.

Sentimentality about nature denatures everything it touches.

poverty has no causes. Only prosperity has causes. Analogically, heat is a result of active processes; it has causes. But cold is not the result of any processes; it is only the absence of heat. Just so, the great cold of poverty and economic stagnation is merely the absence of economic development.

Traffic congestion is caused by vehicles, not by people in themselves.

Why did I become a Canadian citizen? Not because I was rejecting being a U.S. citizen. At the time when I became a Canadian citizen, you couldn't be a dual citizen. Now you can. So I had to be one or the other. But the reason I became a Canadian citizen was because it simply seemed so abnormal to me not to be able to vote.

Dull, inert cities, it is true, do contain the seeds of their own destruction and little else. But lively, diverse, intense cities contain the seeds of their own regeneration, with energy enough to carry over for problems and needs outside themselves.