Food is also about pleasure, about community, about family and spirituality, about our relationship to the natural world, and about expressing our identity. As long as humans have been taking meals together, eating has been as much about culture as it has been about biology.

My work has gotten more political over time, but once you start exploring food, you find you're up against economics and politics and psychology and anthropology, all of these different things you have to deal with.

I won't eat in a restaurant with filthy bathrooms. This isn't a hard call. They let you see the bathrooms. If the restaurant can't be bothered to replace the puck in the urinal or keep the toilets and floors clean, then just imagine what their refrigeration and work spaces look like.

Food is not rational. Food is culture, habit, craving and identity.

I love the masochistic aspect of eating seething, real Sichuan food in Sichuan Province.

The great virtue of a diversified food economy, like a diverse pasture or farm, is its ability to withstand any shock. The important thing is that there be multiple food chains, so that when any one of them fails-when the oil runs out, when mad cow or other food-borne diseases become epidemic, when the pesticides no longer work, when drought strikes and plagues come and soils blow away-we'll still have a way to feed ourselves.