I must say that in my own mind, I think what's important is for us, as a society, to radically reduce the consumption of meat. This is more important than some fraction of us become moral saints and become vegetarians so it would be much better if we would reduce meat consumption by three quarters of each of us as an individuals would only eat one-quarter as much meat as we do now then that half of the population should become vegetarian. We should see this as a collective challenge rather than an issue about individual, moral period.

If I drive my car to the store, those carbon molecules that are emitted actually get into the atmosphere circulation systems and affect climate in a global basis. This is shocking, this is amazing! No one in the 18th Century would have believed that anything like this were at all possible and I don't think we have, as part of our common sense, morality, norms and values that are really responsive to those kinds of issues, to the kind of power that we now are able to exert over the future and over people who live very far from us.

Acts are right in virtue of the goodness of their consequences.

Even if Bill McKibben were to become dictator, future generations would suffer because of the carbon we had already emitted.

Philosophers (and probably most intellectuals) are more interested in pursuing what they see as the logical implications of their theories than they are in paying attention to the shlumpy diversity of defensible values that people actually have, and then trying to figure out how these might be negotiated in the life of an agent or community.

The Enlightenment dream is a good one. The idea that people should rationally appreciate their place in nature, assess threats and possibilities, and regulate their behavior in response is inspiring.

In trying to develop an impartial, expansive ethic we are trying to get ethical systems to do something which they did not evolve in order to do. This doesn't mean that it can't be done or that we shouldn't try to expand the reach of our ethical frameworks, only that there are reasons to be skeptical about its success.