The four words that will define this century: The Earth is full.

The Earth doesn't care what we need; Mother Nature doesn't negotiate.

We can choose this moment of crisis to ask and answer the big questions of society's evolution — like, what do we want to be when we grow up?

If you want to change the world, change it through the market

When you are surrounded by something so big that requires you to change everything about the way you think and see the world, then denial is the natural response. But the longer we wait, the bigger the response required.

Our system - of debt-fueled economic growth, of ineffective democracy, of overloading planet Earth - is eating itself alive.

It takes a good crisis to get us going. When we feel fear and we fear loss we are capable of quite extraordinary things.