All the arguments about nutrition are really about what is the problem ingredient in the western diet. Is it the fat? Is it the lack of fiber? Is it the refined carbohydrates?But we don't have to worry about it. We just have to try to get off that diet to the extent we can.

Man is by definition the first and primary weed. Weeds are not the other. Weeds are us.

Dreams of innocence are just that; they usually depend on a denial of reality that can be its own form of hubris.

It's really important for your health, because you will never use as much salt and fat and sugar as a corporation will use cooking for you.

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.

A natural historian is somebody who looks at something in terms of its relationship to the rest of the natural world. You look at things ecologically. When you see a cow on a feedlot, you don't just see a cow; you see a cow that is eating certain food. You follow that food and that food takes you back to a corn field.

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.