If they [animals] were really to get the equal consideration that I believe they should, we wouldn't have commercial animal production in this country.

Personal purity isn’t really the issue. Not supporting animal abuse – and persuading others not to support it – is.

Why...is the hunter who shoots a deer for venison subject to more criticism than the person who buys a ham at the supermarket? Overall, it is probably the intensively reared pig who has suffered more.

I don't see how anyone could really think that if you have a choice between saving the life of one person and saving the lives of a million people, to say - well, I've saved the one - can you really take that seriously? I can't.

If we can put a man on the moon and sequence the human genome, we should be able to devise something close to a universal digital public library.

Nineteen thousand children [are] dying every day. Does it really matter that we're not walking past them in the street? Does it really matter that they're far away? I don't think it does make a morally relevant difference.

The traditional view of the sanctity of human life will collapse under pressure from scientific, technological and demographic developments.