We know it is impossible to go on finding, moving and wasting oil, leveling forests, paving land, dumping poisons, and multiplying our numbers. A new way of life, a new set of thoughts must be found.

The human world is a long way from meeting the needs of the present, and it is borrowing massively from the future - not only by piling up money debt, but also by degrading the resources from which all real wealth ultimately comes.

Calculating how much carbon is absorbed by which forests and farms is a tricky task, especially when politicians do it.

I know that war and mayhem run in our blood. I refuse to believe that they must dominate our lives. We humans are animals, too, but animals with amazing powers of rationality, morality, society. We can use our strength and courage not to savage each other, but to defend our highest purposes.

I'm a talk-show junkie. I'd rather listen to real folks stumbling to express their own thoughts than to polished puppets reading what others have written.

Both the United States and the world economy have already reached - and surpassed - their sustainable physical limits. Ground water is being drawn down, soils eroded, forests cut faster than they grow, fish caught faster than they reproduce, non-renewable fossil fuels burnt without developing substitutes.