President Obama spoke in the White House Rose Garden on Friday morning about winning the Nobel Peace Prize. Here is part of his remarks:

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Good morning. Well, this is not how I expected to wake up this morning. After I received the news, Malia walked in and said, "Daddy, you won the Nobel Peace Prize, and it is Bo's birthday!" And then Sasha added, "Plus, we have a three-day weekend coming up." So it's good to have kids to keep things in perspective.

I am both surprised and deeply humbled by the decision of the Nobel Committee. Let me be clear: I do not view it as a recognition of my own accomplishments, but rather as an affirmation of American leadership on behalf of aspirations held by people in all nations.

To be honest, I do not feel that I deserve to be in the company of so many of the transformative figures who've been honored by this prize -- men and women who've inspired me and inspired the entire world through their courageous pursuit of peace.

But I also know that this prize reflects the kind of world that those men and women, and all Americans, want to build -- a world that gives life to the promise of our founding documents. And I know that throughout history, the Nobel Peace Prize has not just been used to honor specific achievement; it's also been used as a means to give momentum to a set of causes. And that is why I will accept this award as a call to action -- a call for all nations to confront the common challenges of the 21st century. Watch Obama's speech on Nobel award »

These challenges can't be met by any one leader or any one nation. And that's why my administration has worked to establish a new era of engagement in which all nations must take responsibility for the world we seek. We cannot tolerate a world in which nuclear weapons spread to more nations and in which the terror of a nuclear holocaust endangers more people. And that's why we've begun to take concrete steps to pursue a world without nuclear weapons, because all nations have the right to pursue peaceful nuclear power, but all nations have the responsibility to demonstrate their peaceful intentions.