Right now, America doesn't ask us to do anything besides pay taxes. We don't even have to vote. But as psychologists will tell you, when you have to sacrifice for something, you value it more. What about national service for young people? Everybody between 18 and 24 could spend a year or two working for this country in some capacity. It'd be an amazing thing. And it would mix this country racially, culturally, economically.

Maybe the ultimate wound is the one that makes you miss the war you got it in.

I would never want to pass a law limiting freedom of speech, but that doesn't mean we have to condone statements that undermine basic national unity and respect. Imagine being asked to defend a country where some citizens say the man in the White House isn't their president. Or a major presidential contender accuses the commander in chief of not even being a U.S. citizen. Those kinds of statements erode trust in our democracy, and it's up to both parties to publicly reject them. We have to restore confidence that we are a nation that loves and believes in itself.

My reporting in Africa wouldn't be political per se, but it's certainly the point of my reporting - and of a lot of other reporters I know: Human suffering is bad, and if reporting stories about it brings it to light and someone does something, that's part of the point of journalism. And it's a thin line between that and activism, and you have to be careful about that.

In some ways, risk-taking is the ultimate act of self-indulgence , an obscene insult to the preciousness of life. And yet, how can one dismiss something that persists despite every reasonable theory that it shouldn't?

One interesting thing I found was that if you take an affluent modern society and collapse it during a crisis, like a war or a natural disaster, people begin relating in a more ancient, organic way. They're functioning in small interdependent groups and putting others first. And another irony is that even in terrible times, cooperating makes people feel good.

There's no reason to do anything twice, and certainly no reason to do something that almost killed you.