Animals have this way of constantly confronting us with ultimate questions - about truth and falsehood, guilt and innocence, God and sanctity and the soul - forcing us to define ourselves and our relationship to the world.

The factory farm is . . . an obvious moral evil so sickening and horrendous. . . All this so we can have our accustomed veal or lamb or fried chicken or pork chop or hot dog.

My point is that when you look at a rabbit and can see only a pest, or vermin, or a meal, or a commodity, or a laboratory subject, you aren't seeing the rabbit anymore. You are seeing only yourself and the schemes and appetites we bring to the world-seeing, come to think of it, like an animal instead of as a moral being with moral vision.

If we are defined by reason and morality, then reason and morality must define our choices, even when animals are concerned. When people say, for example, that they like their veal or hot dogs too much to ever give them up, and yeah it's sad about the farms but that's just the way it is, reason hears in that the voice of gluttony. We can say that what makes a human being human is precisely the ability to understand that the suffering of an animal is more important than the taste of a treat.

An author describing the methods of intensive farming, or the excesses of sport hunting, or even the harsher uses of animals in science writes with confidence that most readers will share his sense of concern and indignation. Sounding the call to action-convincing people that change is not only necessary, but actually possible-is more problematic. In protecting animals from cruelty, it is always just one step from the mainstream to the fringe. To condemn the wrong is obvious, to suggest its abolition radical.

Sometimes tradition and habit are just that, comfortable excuses to leave things be, even when they are unjust and unworthy. Sometimes--not often, but sometimes--the cranks and radicals turn out to be right. Sometimes Everyone is wrong.

Go into the largest livestock operation, search out the darkest and tiniest stall or pen, single out the filthiest, most forlorn little lamb or pig or calf, and that is one of God's creatures you're looking at, morally indistinguishable from your beloved Fluffy or Frisky.