You don't filter smokestacks or water. Instead, you put the filter in your head and design the problem out of existence.

We have carbon in the atmosphere. That is a material in the wrong place problem. It's just like what I said about the lead. Lead in the biosphere is not good. Carbon in the atmosphere (over natural levels) is a problem.

The surest way to heal an eco-system is to connect it to more of itself.

Sustainability takes forever. And that's the point.

If we think about things having multiple lives, cradle to cradle, we could design things that can go back to either nature or back to industry forever.

Richard Meier told me, 'Young man, solar energy has nothing to do with architecture.'

In planetary terms, we're all downstream.