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

Apocalypses don't happen very often. They tend to be separated by tens or even hundreds of millions of years.

Some philosophers think that the idea of a consequentialist virtue theory is strange, but the real strength of consequentialism is that it can emulate the requirements of other moral theories when it is the case that acting on those theories would improve the world.

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

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.

If you're interested in doing something about climate change as we all should be, all of us who care about future people and creatures that will inhabit this world. Then buying a Prius is a good thing but an even better thing would be to be on the streets demanding urgent action from the United States' Congress.

In much of the world today there are no more chilling words than "I'm from the United States and I'm here to help you."