I begin with human psychology and then see what we can say about ethics.

In the face of the collective action problems that are at the heart of the environmental crisis, consequentialists should seek to inculcate the "green virtues" which includes the virtue of cooperativeness. This would not bring about the best possible world but it would set us on the path of making it better.

If we're interested in the continuation of the human experiment we need to focus on resilience and coping with change (whether natural or anthropogenic) rather than living as if God or nature has given us a nice, orderly, calm, Babbit-like existence.

A great deal of our math, science, philosophy, and everyday behavior presupposes that stability and equilibria are the "default" states, and everything else involves some "perturbation." This is a mental model, a conceptual frame, a tacit belief, a presupposition - whatever you want to call it.

Even those who specialize in the history of philosophy often ignore the political and cultural context, and the natural world in which their philosophers were philosophizing. This has consequences both trivial and important. If you systematically read the last fifty years of the major journals in our discipline you would be amazed at the amount of redundancy. Most of this is unacknowledged because most of us know so little about the history of our discipline and even the subfields in which we work.

If you have a flat, fixed view of state interest then it is difficult to understand why some states adopt aggressive climate change policies, even when that risks economically disadvantaging them, and other states do not even when it would be in their economic interests to do so.

We can use economic instruments to help realize our goals but economics does not tell us what our goals should be.