I don't get to sleep when I'm in New York. Really. I'm living on adrenaline.

I studied architecture in New York. So, really I was very moved, like everyone else, to try to contribute something that has that resonance and profundity of it means to all of us.

When you're a kid with artistic yearnings brought up in the Bronx, you don't get fed up too easily.

There will be a competition for the memorial. And then it can be developed with trees, with planting. It can become a very beautiful place protected from the streets, because it is below. And it can be something very moving and very private.

The Spiral Gallery may happen, too. It is not dependent on government funding.

It's about how to bring together the seemingly contradictory aspects of the memorial, which is about a tragedy and how it changed the world, but also about creating a vital and beautiful city of the 21st century.

Cities are the greatest creations of humanity.