I don't understand the notion that modern farming is anything do to with nature. It's a pretty gross interference with nature. I think it ought to be governed by the standards of how it affects the individual animals, just as we'd want to deal with institutions that deal with humans by how they affect individual humans.

If we're going to live an ethical life, it's not enough just to follow the thou-shalt-nots. … If we have enough, we have to share some of that with people who have so little.

Christianity is our foe. If animal rights is to succeed, we must destroy the Judeo-Christian religious tradition.

Evolution has no moral direction. An evolutionary understanding of human nature can explain the differing intuitions we have when we are faced with an individual rather than with a mass of people, or with people close to us rather than with those far away, but it does not justify those feelings.

I don't think nationalism is alone holding the field; it's in contention with a lot of different things.

According to the Dominant Western tradition, the natural world exists for the benefit of human beings.

Looking back on my career, I think I've been extremely fortunate to be in the right place at the right time in order to have the influence that I did.