I always run into these Ph.D.s. They write and write and write about sustainable development. Then these guys ask me, 'But, how do you do it?' They are scared to death to do anything.

The secret to the city is integration. Every area of the city should combine work, leisure and culture. Separate these functions and parts of the city die.

Many cities end up putting off things because they want to understand everything. They don't understand that innovating is about starting. Taking care of a city is a process that you start, and then give the population space to respond.

The design of a city is like a strange archeology.

I have realized after all these years that a city that has a good quality of life attracts jobs. People don't want to invest in places if there is no quality of life.

A city is like a family portrait - you don't tear it up if you don't like your uncle's nose.

We can’t have landfills forever and we can’t ask others to accept our trash.