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

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

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.

Thanks to those pesky laws of physics, when things aren't sustainable, they stop.

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

Reciting from rote seems a terrible way to honor the gods and a precise killing of the power of the words.

A man never tells you anything until you contradict him.

The pose begins when you want to leave it.

These are things that I continue to enjoy speaking about. The woods. Boats. Greeks. I think the real heart of it, is really being in love with these Dutch paintings over the last several years.

Governments do not know what they cannot do until after they cease to be governments. Each government carries the seeds of its own destruction.

The scalded head feares cold water.

Countless people...will hate the New World Order...and will die protesting against it...we have to bear in mind the distress of a generation or so of malcontents.

One may even suspect that there is more to reality than measurements will ever reveal.

God demands not that I be successful, but that I be faithful.

Necessity, like electricity, is in ourselves and all things, and no more without us than within us.