We're always projecting our moral categories on things. I think that's inevitable. But capitalism places no particular value on morality. Morality in the market is enforced by contract and regulation and law, because morality is understood to be in conflict with the motive force of greed and accumulation.

It's not food if it arrived through the window of your car.

One of the skills of a journalist, though, is to find people who can teach him what he needs to know. So instead of taking courses, I've been very lucky in that I found teachers - scientists, especially - who were willing to teach me what I needed to know, whether it was about genetically modified crops or how photosynthesis works, and so on. I just find my teachers and don't have to pay for my education.

Don't eat any foods you've ever seen advertised on television.

Corn is a greedy crop, as farmers will tell you.

Eat food. Not too much. Mostly plants. That, more or less, is the short answer to the supposedly incredibly complicated and confusing question of what we humans should eat in order to be maximally healthy.

American farmers produced 600 more calories per person per day in 2000 than they did in 1980. But some calories got cheaper than others: Since 1980, the price of sweeteners and added fats (most of them derived, respectively, from subsidized corn and subsidized soybeans), dropped 20 percent, while the price of fresh fruits and vegetables increased by 40 percent.