We categorize as we do because we have the brains and bodies we have and because we interact in the world as we do.

We now know, from the latest research about neurons, that we are hard-wired for empathy. We're hard-wired for cooperation. That is something about what we are as people - what it means to be a human being. And what Barack Obama was addressing was not just race or just the nature of politics. The great speeches address who we are as people, what it means to be a human being.

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.

Unless you frame yourself, others will frame you — the media, your enemies, your competitors, your well-meaning friends.

For real human beings, the only realism is an embodied realism.

Metaphor is pervasive in everyday life, not just in language but in thought and action. Our ordinary conceptual system, in terms of which we both think and act, is fundamentally metaphorical in nature.

If you're a progressive, you can find lots of people who call themselves conservatives, but who agree with you on lots of things. There are people who call themselves conservatives, but who love the land as much as any environmentalist. Progressives share a number of common values with people who call themselves conservatives. Barack Obama has understood that very well. What he calls bipartisanship is not adopting conservative views, but finding where people who consider themselves conservatives share with him and other progressives these fundamental American values.