For the private sector to flourish, special privilege must give way to equal opportunity and equal risk for all.

It's a very bad thing when people exterminate other people, and people persecute minorities.

NATO is still the most remarkable alliance in history. It stuck together through 40 years of Cold War, and it then joined together to fight in Afghanistan. In the 1980s, I would not have thought this was going to be possible.

Every math curriculum in the world is based on the idea of hand-calculating, and most of what you're teaching is how to calculate. And I think the resistance to this is very variable.

People change their habits. I know Americans who don't go to Paris because they think it is too dangerous.

The most striking thing is that even before Osama bin Laden was killed, he seemed largely irrelevant to the Arab Spring.

I think it's a mistake to rely too much on any one economic factor. It's why investors try to spread their portfolio round.