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.

Modern culture appears to have adopted a strategy of tragedy. If we come here and say, I didn't intend to cause global warning, it's not part of my plan, then we realize it's part of our defacto plan because it's the thing that's happening because we have no other plan.

Waste equals food, whether it's food for the earth, or for a closed industrial cycle. We manufacture products that go from cradle to grave. We want to manufacture them from cradle to cradle.

This idea that things are designed to go back to nature or industry for ever which is our articulation of these two metabolisms are actually a discovery not an invention.

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

Recycling is more expensive for communities than it needs to be, partly because traditional recycling tries to force materials into more lifetimes than they are designed for - a complicated and messy conversion, and one that itself expends energy and resources. Very few objects of modern consumption were designed with recycling in mind. If the process is truly to save money and materials, products must be designed from the very beginning to be recycled or even "upcycled" - a term we use to describe the return to industrial systems of materials with improved, rather than degraded, quality.

And to use something as elegant as a tree? Imagine this design assignment: Design something that makes oxygen, sequesters carbon, fixes nitrogen, distills water, makes complex sugars and foods, changes colors with the seasons, and self-replicates. and then why don't we knock that down and write on it?