I don't know anyone who is more admired and respected in the international community than President Karzai, for his strength, for his wisdom and for his courage to lead this country first in the defeat of the Taliban and now in rebuilding a democratic and unified Afghanistan. And I can tell you I am with foreign ministers and with heads of state all over the world. I sit in the councils of NATO. I sit with the EU. I sit with people all over the world and there is great admiration for your president and also for what the Afghan people are doing here.

I think the Saudis are not only not supporting terrorism, they're fighting it. And why? Because it is in their interests to fight it. We don't agree on everything, but I do believe that the Saudis for their benefit, they're fighting terrorism and fighting it quite aggressively.

I was born in segregated Birmingham, Alabama. I didn't have a white classmate till we moved to Denver.

If you're always in the company of people who agree with you, you're going to think of people who don't agree with you as venal or stupid. I constantly tell my students that if they're in the company of people who always say "amen" to what you say, find other company. And that is the source of illiberalism, when you are unable to listen to someone who thinks differently. That's when democracies are in trouble.

It is a dangerous thing to ask why someone else has been given more. It is humbling - and indeed healthy - to ask why you have been given so much.

You do have to keep in mind as you're going through extraordinarily difficult circumstances, that if you stay true, true to your values, if you stay true to your principles, if you believe in these values, then you can work in that context to right policies that may not be working.

After all, when the world looks to America, they look to us because we are the most successful political and economic experiment in human history.