The issue of snacking is complicated. In principle, "grazing" is probably a good idea. It would even out the insulin spikes and things like that from eating large meals. The problem is it makes it harder for people to control the amount they're eating.

I think that the American diet is a very large part of the reason we're spending 2.3 trillion dollar per year on health care in this country. 75% of that money goes to treat chronic diseases, preventable chronic diseases, most of those are linked to diet.

One of the most irresponsible things we can do is eat in ignorance, without any awareness of what our eating is doing to the world or to other species.

The real food is not being advertised.

The green thumb is equable in the face of nature's uncertainties; he moves among her mysteries without feeling the need for control or explanations or once-and-for-all solutions. To garden well is to be happy amid the babble of the objective world, untroubled by its refusal to be reduced by our ideas of it, its indomitable rankness.

One surprise is how deeply the food system is implicated in climate change. I don't think that has really been on people's radar until very recently. 25 to 33 percent of climate change gases can be traced to the food system. I was also surprised that those diseases that we take for granted as what will kill us - heart disease, cancer, diabetes - were virtually unknown 150 years ago, before we began eating this way.

Johnny Appleseed was revered . . he was . . . an evangelist (of a doctrine veering perilously close to pantheism).