We have to realize that treating animals well is in our best interests, too. Cruelty is indivisible; when you are cruel to an animal, you are training yourself to be cruel to people, too (and vice versa).

From my earliest memories I was fascinated by animals. I would explore my backyard for insects and gaze at anthills until my elbows became sore. When I was 8, my mother bought me a book of North American birds and I've been keen on birdwatching since.

When I watch animals, I realize I am watching individual with lives that matter, to them. It isn't just another chicken or another mouse. She is that particular hen, autonomous and unique. He is that particular mouse with a unique life and social identity.

Studies show that people who abuse animals are far more likely to engage in interpersonal violence. Violent crime rates tend to be higher in areas where slaughterhouses are related, even when controlling for other variables.

Anyone who's lived with companion cats or dogs knows that they are unique individuals with their own personalities. I think animals' secret to getting along is that they are not burdened by an ego.

The more we learn, the more questions arise.

I sense that, without sensitivity to physical pain and pleasure, man would not have known self-interest, and consequently know just or unjust acts. Thus, physical sensitivity and self-interest are the authors of all justice.