One of the things cognitive science teaches us is that when people define their very identity by a worldview, or a narrative, or a mode of thought, they are unlikely to change-for the simple reason that it is physically part of their brain, and so many other aspects of their brain structure would also have to change; that change is highly unlikely.

You see Bill Clinton, and you say: Oh, this guy cares about me. Hillary Clinton isn't the same way. You see her, and you don't necessarily have that view. She's trying to achieve the same thing without the voice and the body language, and she's having a harder time doing it. But when she's effective, that's what she's effective at.

Empathy - that is, caring about people and acting responsibly on that care, not just for yourself, but for others - this is something that Barack Obama understands very well. He was a professor of constitutional law at the University of Chicago for ten years. As an expert on the Constitution and on our family values, he understands very well that the country is fundamentally about caring for one another. The day after his speech, he was interviewed on CNN, and Anderson Cooper asked him what patriotism was. He said patriotism begins with caring for one another.

Our concepts structure what we perceive, how we get around in the world and how we relate to other people. Our conceptual system thus plays a central role in defining our everyday realities.

Do we really think that the United States will have the protection of innocent Afghans in mind if it rains terror down on the Afghan infrastructure? We are supposedly fighting them because they immorally killed innocent civilians. That made them evil. If we do the same, are we any less immoral?

In all aspects of life... we define our reality in terms of metaphors and then proceed to act on the basis of the metaphors. We draw inferences, set goals, make commitments, and execute plans, all on the basis of how we in part structure our experience, consciously and unconsciously, by means of metaphor.

For centuries, we in the West have thought of ourselves as rational animals whose mental capacities transcend our bodily nature. In this traditional view our minds are abstract, logical, unemotionally rational, consciously accessible, and, above all, able to directly fit and represent the world. Language has a special place in thie view of what a human is - it is a privileged, logical symbol system internal to our minds that transparently expresses abstract concepts that are defined in terms of the external world itself.