I had left graduate school, determined that I wasn't going to do anything else to "save the world" until I understood how I could get at the underlying causes of deepening suffering. To do that, I had to start by admitting that I didn't know.

My children threw me a life line: "Return to your roots - food - and rewrite your first book, Diet for a Small Planet." I learned that if I could just show up, in this case, if I could just get myself out of bed, get to the computer in my tiny office at MIT, and start writing, help would start arriving.

Honest hope has an edge. It's messy. It requires that we let go of all pat answers, all preconceived formulas, all confidence that our sailing will be smooth. It's not a resting point. Honest hope is movement.

Food has always been at the center of community bonding, of family life, and simple pleasure, but it is becoming more and more an obsession, a source of pain.

On the one hand, our social nature is our greatest beauty - it means that we have natural empathy and sympathy. But our social nature also means that we may let ourselves be controlled by the judgments of others, precisely because we care so much about our status in community.

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

With an eco-mind, we get ready for surprises, for we realize it's just not possible to know what's possible.