You have freedom, so you have to make choices - and at the point when I make a choice, the building starts to look like a Frank Gehry building. It's a signature.

I would like to make a building as intellectually driven as it is sculptural and as positive as it would be acceptable to hope.

We're offering them information so they can make informed choices. If you have information, you can make a choice to take a different route.

Liquid architecture. It's like jazz - you improvise, you work together, you play off each other, you make something, they make something. And I think it's a way of - for me, it's a way of trying to understand the city, and what might happen in the city.

Some people may say my curved panels look like sails. Well, I am a sailor, so I guess I probably do use that metaphor in my work - though not consciously.

I was in Peru and visited a building near Lima built by the Incas. It was low in height, with no windows at all, but all the way in the back there was air movement. And I couldn't figure out how they'd done it; it was incredible.