You could not have evolved a complex system like a city or an organism - with an enormous number of components - without the emergence of laws that c….

We form cities in order to enhance interaction, to facilitate growth, wealth creation, ideas, innovation, but in so doing, we create from - from a p….

Cities tolerate crazy people. Companies don't..

One of the remarkable things about slums is that they do develop their own social organization and economy and even culture that is, on some level, f….

Cities are the crucible of civilization..

Cities are obvious metaphors for life. We call roads arteries and so forth..

The paradigm of physics - with its interplay of data, theory and prediction - is the most powerful in science..

When people come together, they become much more productive..