You'd never think of taking a cab if you had to walk a mile down Chicago's Michigan Avenue. But in a bad city you take a cab just to go around the corner.

When I came to America in the '60s, it was the place to be. I wonder if I'd come here today.

The architecture profession has lost a lot of its integrity, especially in the USA. The general architect here has no scruples, no ambitions.

Most architects say: I want to use this type of glass, even if it's too reflective or doesn't let enough light in. However, the use of a certain type of glass might change the comfort level.

The American attitude towards efficiency and execution should always underlie architecture.

Transparency is not the same as looking straight through a building: it's not just a physical idea, it's also an intellectual one.

I find if my body feels well and I exercise regularly, I think better, work better and feel better.