Old ideas can sometimes use new buildings. New ideas must use old buildings.

You don't get new products and services out of sameness.

When we deal with cities we are dealing with life at its most complex and intense. Planners are guided by principles derived from the behaviour and appearance of suburbs, tuberculosis sanatoria, fairs and imaginary dream cities - from anything but cities themselves.

Some men tend to cling to old intellectual excitements, just as some belles, when they are old ladies, still cling to the fashions and coiffures of their exciting youth.

Does anyone suppose that, in real life, answers to any of the great questions that worry us today are going to come out of homogeneous settlements?

But look what we have built ... This is not the rebuilding of cities. This is the sacking of cities.

The entrepreneurial investors of the time just want to repeat themselves indefinitely and don't know when to stop. You can't do that. And so finally the housing boom, or the auto boom, or whatever it is that's been carrying things along, runs out of customers.