Semantics is about the relation of words to thoughts, but it also about the relation of words to other human concerns. Semantics is about the relation of words to reality - the way that speakers commit themselves to a shared understanding of the truth, and the way their thoughts are anchored to things and situations in the world.

An enormous amount of scientific language is metaphorical. We talk about a genetic code, where code originally meant a cipher; we talk about the solar system model of the atom as though the atom were like a sun and moon and planets.

The reason the United States is not so likely to invade Iran is precisely because of the lessons learned from Iraq. And conversely, the Iranian push towards nuclear capability is calculated to deter invasions like the kind deposing Saddam Husain.

Look at almost any passage, and you'll find that a paragraph has five or six metaphors in it. It's not that the speaker is trying to be poetic, it's just that that's the way language works.

The brain is not a bag of traits. It's startlingly complex. There are few or no single genes with a consistent effect on the mind.

If crime is going down, you shouldn't be increasing resources for crime prevention. Or you should be taking note of what has worked and concentrate the crime-prevention methods on policies that have a track record of success.

Space and force pervade language. Many cognitive scientists (including me) have concluded from their research on language that a handful of concepts about places, paths, motions, agency, and causation underlie the literal or figurative meanings of tens of thousands of words and constructions, not only in English but in every other language that has been studied.