There are dangers in sentimentalizing nature. Most sentimental ideas imply, at bottom, a deep if unacknowledged disrespect. It is no accident that we Americans, probably the world's champion sentimentalizers about nature, are at one and the same time probably the world's most voracious and disrespectful destroyers of wild and rural countryside.

Cities never flourish alone. They have to be trading with other cities. My new hypothesis shows why. But also in trading with each other they can't be in too different stages of development, and they can't copy one another.

I don't think that you can dispose of the constructive and inventive things that America is doing - and say, "Oh we aren't doing anything anymore and we are living off of what the poor Chinese do." It is more complicated than that. There is the example of Detroit which was once a very prosperous and diverse city. And look what happened when it just specialized on automobiles. Look at Manchester when it specialized in those dark satanic mills, when it specialized in textiles. It was supposed to be the city of the future.

I think that part of the growing popularity of the New Urbanism is not simply because it is so rational, and not simply because people care so much about community or even understand it, or the relation of sprawl to the ruination of the natural world. But they just don't like what is around. And they will be ruthless with it.

The more successfully a city mingles everyday diversity of uses and users in its everyday streets, the more successfully, casually (and economically) its people thereby enliven and support well-located parks that can thus give back grace and delight to their neighborhoods instead of vacuity.

There is no logic that can be superimposed on the city; people make it, and it is to them, not buildings, that we must fit our plans.

That the sight of people attracts still other people, is something that city planners and city architectural designers seem to find incomprehensible. They operate on the premise that city people seek the sight of emptiness, obvious order and quiet. Nothing could be less true. The presences of great numbers of people gathered together in cities should not only be frankly accepted as a physical fact... they should also be enjoyed as an asset and their presence celebrated.