Religious freedom doesn't mean you can force others to live by your own beliefs

The arc of the moral universe may bend towards justice, but it doesn't bend on its own.

The very technologies that empower us to do great good can also be used to undermine us and inflict great harm.

Obviously, we've all had disagreements and differences in the past. I suspect we'll have them again in the future. But last night as Americans learned that the United States had carried out an operation that resulted in the capture and death of Osama bin Laden. I think we experienced the same sense of unity that prevailed on 9/11. We were reminded again that there is a pride in what this nation stands for. And what we can achieve that runs far deeper than party, far deeper than politics.

What I've said to [my team] is, "Look, we ran our leg of the race and we did a darn good job."

We need to teach our kids that it's not just the winner of the Super Bowl who deserves to be celebrated, but the winner of the science fair.

It [is] that courage that Africa most desperately needs.