Moral revolutions are typically seen retrospectively. Prospectively, the revolutionaries tend to look like crazy people, and sometimes they are.

Citizens often think of a state's interests in terms of the promotion of ideals such as democracy, a particular way of life, or other values which they endorse or see as part of their historical continuity and identity. In this domain as in others values are not fixed, and so a state's interests are dynamic and in a constant state of negotiation and construction.

I grew up as an only child of two parents who had dropped out of high school. They had enormous respect for education and encouraged me as a child when I had strong interests in both math and science, but we really didn't have much by way of educational role modeling in our family.

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."

I think when it comes to climate change, the single most important thing in the world is for the United States' Congress to pass an effective bill that will put a price in carbon because if it starts costing something to emit carbon, this will provide an incentive, people do act on the basis to some extent of economic incentives to emit fewer greenhouse gases.

We're highly adaptable and have developed some powerful systems of representation.

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.