I think that luxury has nothing to do with money, and everything to do with beauty.

Every aspect of our lives is, in a sense, a vote for the kind of world we want to live in.

My path has not been smooth. But the great thing about getting to be an elder is that you can look back and see the intense times of confusion and challenge, and see that if you keep walking through them, they can lead to times of great satisfaction and reward.

Engagement is the good life. What could be more exciting than getting involved in something that you care about and joining with others and seeing something change? What could be more thrilling?

I had no identity [when I was 27] - I was terrified that somebody would ask me what I was doing, and I would have no answer.

What is different and exciting is how much we have learned. We learned we were right that we don't need the chemical model of agriculture. We know so much more about the life of soil now and we understand how plants synergistically work together with microbes and animals to create healthy conditions.

In the late 1960s, there were alarming predictions that worldwide famine was around the corner. I wondered if humans had already lost the race, overrun the Earth's capacity. I let one question lead to the next, and unearthed information that would forever change my life: Not only is there enough food in the world to feed every man, woman, and child on Earth, there is enough to make us all chubby.