Our mental environment is a common-property resource like the air or the water. We need to protect ourselves from unwanted incursions into it, much the same way we lobbied for non-smoking areas ten years ago.

An increasing number of people are growing uncomfortable with the gulf between the world's rich and the poor. Ostentatiously splashing your money around simply draws attention to that disparity, and to your own position on the lucky higher ground. It suggests a callousness, an inhumanity, a let's-just-rub-their-noses-in-it arrogance.

The global economy is a doomsday machine that must be stopped and reprogrammed.

In the global marketplace of the future the price of every product will tell the ecological truth.

Jamming a coin into a monopoly newspaper box or liberating a billboard in the middle of the night can be a rather honest and joyful thing to do.

America, the great liberator, is in desperate need of being liberated from itself - from its own excesses and arrogance. And the world needs to be liberated from American values and culture, spreading across the planet as if by divine providence.

People look at the future and see a black hole. They look at climate change and see an ecological crisis. They look at their leaders corrupted by money and see a political crisis. They wonder if they'll ever be able to pay off their student loan or own a house. Given this ecological, political and financial crisis, what they want is a different future. Their fundamental demand is a different regime to provide that future.