Don't look at the superficial success, at the short-term success. Look at the deep spiritual questions that architecture has to answer. Who do you build for? Where? What should you build?

Well, I think one doesn't really have to invent this memorial space, because it is already there. And it is speaking with a voice and, you know, 4 million of us came to see the site.

We live in a time of renaissance ... cities are coming back to life, after a long neglect.

Don't look at the superficial success, at the short-term success. Look at the deep spiritual questions that architecture has to answer. Who do you build for? Where? What should you build?

There are more people living in Lower Manhattan now than before the terrorist attacks. That's faith for you. There's such a strong spirit here.

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.

Buffer between commercial, memorial and retail space.