I think historically modern economics, capitalist economics, tends to erode moral categories... And this is where I think the right gets capitalism wrong. They kind of assume that there is a moral equivalence or moral valence to capitalism, but I tend to think that economics erodes all the kind of cultural taboos and inhibitions and values it comes into contact with.

Okinawa, one of the longest-lived and healthiest populations in the world, practice a principle they call hara hachi bu: Eat until you are 80 percent full.

Imagine for a moment if we once again knew, strictly as a matter of course, these few unremarkable things: What it is we're eating. Where it came from. How it found its way to our table. And what, in a true accounting, it really cost.

So that's us: processed corn, walking.

Oil companies have gas stations. There's this whole huge structure that is about finding a new liquid for the tank. And the idea that maybe there shouldn't be a liquid, that maybe the best is an electrical grid, a sustainably powered electrical grid that we all plug into, that doesn't sit well with oil companies.

There's something magical that happens when people eat from the same pot. The family meal is really the nursery of democracy. It's where we learn to share; it's where we learn to argue without offending. It's just too critical to let go, as we've been so blithely doing.

A vegan in a Hummer has a lighter carbon footprint than a beef eater in a Prius.