I think you've got to accept that certain things are in process that you can't change, that you can't overwhelm. The chaos of our cities, the randomness of our lives, the unpredictability of where you're going to be in ten years from now - all of those things are weighing on us, and yet there is a certain glimmer of control. If you act a certain way, and talk a certain way, you're going to draw certain forces to you.

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.

The game is if the orchestra can hear each other, they play better. If they play better and there's a tangible feeling between the orchestra and the audience, if they feel each other, the audience responds and the orchestra feels it.

Ideas exist in the marketplace; they are thrown out for everyone to use.

When people condemn me for designing iconic buildings in cities and not having an idea what a city is, they haven't done their homework. I started in urban design and city planning. It's just that when I got out of school there wasn't much of a market for that. There still isn't.

China is building cities for a 20 to 40 percent increase in population. India is quickly growing. The carbon footprints of that and other development around the world are overwhelming.

Childhood play is nothing more than an expression of our individuality and preparation for human interaction.