Over the next ten years, I predict, the mainstream of the environmental movement will reverse its opinion and activism in four major areas: population growth, urbaninzation, genetically engineered organisms, and nuclear power.

The urgent finds you; you have to find the important. Importance is not fast. It is slow. It is not superficial. It is deep. And as a result, it's extremely powerful. When important matters go wrong, they undermine everything. When they go right, they sustain everything.

We can influence the future but not see it.

Civilization’s shortening attention span is mismatched with the pace of environmental problems.

There should always be in sight the draw — a kind of a beacon that draws you on through the labyrinth.

Carbon tax has the advantage of basically being able to subsidize one set of activities that you want with another set of activities that you don't want. It's like a cigarette tax.

Redefine the possible.