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.

Ironically, though our society of affluence brings safety and stability, it doesn't bring psychological health. As wealth goes up, suicide and depression rates tend to go up. I read one study that compared women in North America with women in Nigeria, and the group with the highest rates of depression was urban North American women, which is the wealthiest. Now, there are obviously huge stresses that come with poverty, but the poorer the society, the more collaborative people have to be.

An adventure is a situation where the outcome is not entirely within your control. It is up to fate, in other words

No one will remember that President Obama supported the Arab Spring if it eventually fails and the region collapses back into the political Dark Ages. If we actively engage these movements with advice, with money, and, when necessary, with military force, then we get a vote in how it all turns out.

During the air war of 1944, a four-man combat crew on a B-17 bomber took a vow to never abandon one another no matter how desperate the situation. The aircraft was hit by flak during a mission and went into a terminal dive, and the pilot ordered everyone to bail out. The top turret gunner obeyed the order, but the ball turret gunner discovered that a piece of flak had jammed his turret and he could not get out. The other three men in his pact could have bailed out with the parachutes, but they stayed with him until the plan hit the ground and exploded. They all died.

Firemen don't talk about whether a burning warehouse is worth saving.

Combat isn't where you might die -- though that does happen -- it's where you find out whether you get to keep on living. Don't underestimate the power of that revelation. Don't underestimate the things young men will wager in order to play that game one more time.