There are many innovators hard at work seeking to perfect alternatives to meat, milk, and eggs. These food products will, like computer-generated graphics or photography or sound systems, just keep getting better and better until there is little difference between an animal-based protein and a plant-based one, or farm-produced versus cultured meat. That will make it easy for people to make the kinds of choices that will usher in a world with far less violence.

The issue of xenotransplantation - such as transplanting animal organs into humans - is fraught with risks for animals, naturally, and for people.

We've witnessed so many revolutions in our society. Think of transportation, photography, or communications. Things once unimaginable have become seemingly impossible to live without.

The combination of moral intentionality and human innovation is a powerful force. And that's the force behind the humane economy. By embracing its tenets, we help animals, but we also advance commerce in a more sustainable, and profitable, way. I think we have every reason to believe it is the way of the future.

If I had my personal view, perhaps that might take hold. In fact, I don't want to see another dog or cat born.

Human care (of animals) is simply sentimental, sympathetic patronage.

As a society, we are typically deeply disassociated from animal cruelty, but more than ever, animal protection organizations are telling the backstory. People are being forced, to confront the realities. At the same time, we have an ever-growing understanding of the intelligence and emotional capacities of animals and an acceptance of the principle that animal cruelty is a moral problem.