If you look at the 9/11 highjackers, certainly they were educated, some even had university degrees, but nobody really checked their mothers, who were nearly all illiterate.

In tribal society, the most important thing to do when civilians are killed in a skirmish is to acknowledge the deaths, and provide compensation. When tribal clans fight, the victor is required to take care of the vanquished widows and orphans, which puts a limitation on bloodshed, and tempers warring groups to try and negotiate a compromise.

I've learned that terror doesn't happen because some group of people somewhere like Pakistan or Afghanistan simply decide to hate us. It happens because children aren't being offered a bright enough future that they have a reason to choose life over death.

But what I really believe is education is a key to pretty much everything - prosperity, economics, peace, stability.

One thing that I noticed is having met some former Taliban is even they, as children, grew up being indoctrinated. They grew up in violence. They grew up in war. They were taught to hate. They were, they grew up in very ignorant cultures where they didn't learn about the outside world.

The older I get, the more I appreciate my childhood. It was paradise.

Haji Ali taught me the most important lesson I've ever learned in my life...We Americans think you have to accomplish everything quickly. We're the country of thirty-minute power lunches and two-minute football drills. Haji Ali taught me to share three cups of tea, to slow down and make building relationships as important as building projects.