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

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

We prefer synthetic rather than natural materials. Natural products are almost too valuable. Wood is much harder to produce than metal. And metal is recyclable, while wood isn't.

Critics are entitled to have an opinion, but how can they judge how comfortable a building is? No critic is smart enough to judge how a building will perform over time.

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.

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.

Creativity has more to do with the elimination of the inessential than with inventing something new.