When we say we have "hit the limits," we are saying that nature is the problem, when in fact the limits we have hit are the limits of destruction and waste, not nature.

I think we are at a new evolutionary stage. We evolved in tight-knit tribes in which we faced death if we didn't have the support of the rest of the tribe.

Hope is not wishful thinking. It's not a temperament we're born with. It is a stance toward life that we can choose...not not. The real question for me, though, is whether m hope is effective, whether it produces or is just where I hide to ease my own pain.

Science is showing us that we are even more connected to each other than we ever realized.

Freedom is not the capacity to do whatever we please; freedom is the capacity to make intelligent choices.

We got hooked on grain-fed meat just as we got hooked on gas guzzling automobiles. Big cars made sense only when oil was cheap; grain-fed meat makes sense only because the true costs of producing it are not counted.

Each of us carries within us a worldview, a set of assumptions about how the world works - what some call a paradigm - that forms the very questions we allow ourselves to ask, and determines our view of future possibilities.