Our challenge, our generation's unique challenge, is learning to live peacefully and sustainably in an extraordinarily crowded world. Our planet is crowded to an unprecendented degree. It is bursting at the seams. It's bursting at the seams in human terms, in economic terms, and in ecological terms

Tax the rich. End the wars. Break the power of lobbies in Washington. These are the demands of Occupy Wall Street. They are very important. The US corporations dominate Washington. The big oil companies, Wall Street banks and the military-industrial complex - they rule this country and their influence and power has to be broken.

America's government is not even aware of the gap between its commitments and action, because almost nobody in authority understands the actions that would be needed to meet the commitments.

I believe myself that there's a great deal more interest and engagement among Americans than our politicians recognize.

Our interconnectedness on the planet is the dominating truth of the 21st century. One stark result is that the world's poor live, and especially die, with the awareness that the United States is doing little to mobilise the weapons of mass salvation that could offer them survival, dignity and eventually the escape from poverty.

It's quite possible to arrive in the year 2030 where people are no longer dying of poverty. We could actually help lead a global end-not a reduction, but an end-to absolute poverty...I have always found that a committed, powerful group of leaders, can make a huge difference.

Devaluations are never easy.