I had grown up during Vietnam. I had no connections to the U.S. military, and I had a pretty cynical default opinion about the U.S. military.

There is some evidence that average wave heights are slowly rising, and that freak waves of eighty or ninety feet are becoming more common. Wave heights off the coast of England have risen an average of 25 percent over the past couple of decades, which converts to a twenty-foot increase in the highest waves over the next half century. One cause may be the tightening of environmental laws, which has reduced the amount of oil flushed into the oceans by oil tankers.

The only thing that makes battle psychologically tolerable is the brotherhood among soldiers. You need each other to get by.

My wife, Daniela, and I live in an old house from 1810 with three fireplaces at the end of a dead-end dirt road on Cape Cod, so I turn the trees into firewood for us and a friend of mine sells the rest.

The most profound question is, "What would I risk dying for?" The natural answer is "for my family." But for most of history, we didn't live in families. We lived in small communities that gave us our sense of safety and place in the world, so the natural answer would be "for my people." The blessing and the tragedy of modern life is that we don't need our community to survive anymore. When we lose that idea, we lose a sense of who we are.

Well, you got to remember, bin Laden killed 3,000 Americans and, in some ways, he and his ideology killed tens of thousands of his fellow Muslims, including Pakistanis. I understand that that was provocative and complicated for Pakistan, but only if you accept the idea that he was an acceptable member of Pakistani society.

I'm a good liberal, and I grew up in a very liberal family and had very strongly held beliefs.