I think it is fatal to specialize. And all kinds of things show us that and that the more diverse we are in what we can do, the better.

New ideas often need old buildings.

It may be that we have become so feckless as a people that we no longer care how things do work, but only what kind of quick, easy outer impression they give. If so, there is little hope for our cities or probably for much else in our society. But I do not think this is so.

To seek "causes" of poverty in this way is to enter an intellectual dead end because poverty has no causes. Only prosperity has causes.

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.

People who try to predict the future by extrapolating in a line of more of what exists - they are always wrong.

Detroit is largely composed, today, of seemingly endless square miles of low-density failure.