On certain projects, on big public projects, people definitely are interested in making them greener, but on smaller projects with tight budgets it can be harder.

I don't think all buildings have to be iconic, but the history of the world has shown us that cultures build iconic buildings for their major public buildings.

Everything - design and technology and materials - has changed since the World Trade Center was built. A lot of it has to do with computers, which allow us to be far more efficient as well as structurally sound.

If the general public demanded better, they'd get better, because the market­place responds to the public's needs and desires.

We're physiologically wired differently.

Well, I've always just - I've never really gone out looking for work. I always waited for it to sort of hit me on the head.

If the room is friendly to a relationship between lecturer and audience, you feel everything - the tension, the appreciation. I think the audience feels it too.