We all have different priorities. There's no one single set of ethical rules.

In the end I'm still a writer. I'm still a journalist, and my first responsibility is to my readers. That's where I have to draw the line.

Shake the hand that feeds you.

...think of agriculture as something the grasses did to people to conquer the trees.

Now that I know how supermarket meat is made, I regard eating it as a somewhat risky proposition. I know how those animals live and what's on their hides when they go to slaughter, so I don't buy industrial meat.

When chopping onions, just chop onions.

Wrangham cites several studies indicating that in fact humans don't do well on raw food: they can't maintain their body weight, and half of the women on a raw-food regimen stop menstruating. Devotees of raw food rely heavily on juicers and blenders, because otherwise they would have to spend as much time chewing as the chimps do. It is difficult, if not impossible, to extract sufficient energy from unprocessed plant matter to power a body with such a big, hungry brain.