Obviously I'm grayer, a few more wrinkles. One of the things I'm proud about is that I think my basic character and outlook actually have not changed much. And people who are closest to me will tell you that the guy who came here is the same guy who's leaving.

The only reason I send a single young man or woman in uniform anywhere in the world is because I think it's necessary to keep us safe.

I can think about what [Mahatma] Gandhi said or [Martin Luther] King said about violence begetting violence, and still be true to my job by asking myself the question whenever we're confronted with a situation where some may be arguing for military action: Will this actually result in America being safer, or the most lives being saved?

Part of people's concern is just the sense that around the world the old order isn't holding and we're not quite yet to where we need to be in terms of a new order that's based on a different set of principles, that's based on a sense of common humanity, that's based on economies that work for all people.

Not out of mere charity, but because peace in our time requires the constant advance of those principles that our common creed describes; tolerance and opportunity, human dignity and justice.

What we can do is to live out our lives as best we can with purpose, and love, and joy. We can use each day to show those who are closest to us how much we care about them, and treat others with the kindness and respect that we wish for ourselves. We can learn from our mistakes and grow from our failures. And we can strive at all costs to make a better world.

How do we in the African American community build a culture in which we are saying to our kids, "Here's what it takes to succeed. Here's the sacrifices you need to make to be able to get ahead. Here's how we support each other. Here's how we look out for each other."