Factory farming isn't just killing: It is negation, a complete denial of the animal as a living being with his or her own needs and nature. It is not the worst evil we can do, but it is the worst evil we can do to them.

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.

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.

The only thing worse than cruelty is delegated cruelty.

The smell of factory farms . . . many notice these places only when the odours reach their homes, affecting their own quality of life. We create these animals for our profit and pleasure, playing with their genes, violating their dignity as living creatures, forcing them to lie and live in their own urine and excrement, turning pens into penitentiaries and frustrating their every desire except what is needed to keep them breathing and breeding. And then we complain about the smell.

When you start with a necessary evil, and then over time the necessity passes away, what's left?

Where we find wrongs done to animals, it is no excuse to say that more important wrongs are done to human beings, and let us concentrate on those. A wrong is a wrong, and often the little ones, when they are shrugged off as nothing, spread and do the gravest harm to ourselves and others.