Pigeon racing is a lousy, greedy, and often unlawful activity. One thing that it is not is kind to birds.

The wonderful thing is that it's so incredibly easy to be kind.

All of us in society are supposed to believe that cruelty to animals is wrong and that it is a good thing to prevent needless suffering. So if that is true, how can meat be acceptable under any but the most extraordinary circumstances, such as perhaps roasting the bird who died flying into a window?

Elephants have the largest brains of any mammal on the face of the Earth. They are creative, altruistic and kind.

Perhaps one of the most important things you can do for human beings is wean them off an animal-based diet. It hardens the arteries and runs up our health-care costs. The last thing a poor person can afford is a heart attack or cancer or a stroke. And that's all linked to a meat-based diet. I think animal liberation is human liberation.

The riskiest thing you can do is get greedy.