I honestly don't know, but if America continues to refuse to reduce its greenhouse gas emissions, I see a bleak future not only for American society, but for the world as a whole. This is a global problem that is not going away, and the United States is an obstacle to solving it.

Surely there will be some nonhuman animals whose lives, by any standards, are more valuable than the lives of some humans.

Forests and meat animals compete for the same land. The prodigious appetite of the affluent nations for meat means that agribusiness can pay more than those who want to preserve or restore the forest. We are, quite literally, gambling with the future of our planet – for the sake of hamburgers

I don't think there's anything in the compromise that means that there's a clash of ethics.

To turn the other cheek is to teach would-be cheats that cheating pays.

If possessing a higher degree of intelligence does not entitle one human to use another for his or her own ends, how can it entitle humans to exploit non-humans?

The idea that we can actually have an impact on places more or less instantly, too, by responding in some way or not responding, I think, also makes it true.