There is no example of a country that is successful if its people are divided based on religion or ethnicity. If you look at the Middle East right no… - Barack Obama

I was honored to be the first U.S. President to visit Cuba in almost 90 years. And we still have differences with the Cuban government, but what I said to President Castro is we can't be imprisoned by the past. When something doesn't work for 50 years, we have to try something new. And I believe that engagement and dialogue is more powerful than isolation, and that the changes that we're making can improve the lives of the Cuban people.

In our lives, Michelle and I have been strengthened by our Christian faith. But there have been times where my faith has been questioned – by people who don't know me – or they've said that I adhere to a different religion, as if that were somehow a bad thing.

With these thoughts came another: Was that unity of effort, that sense of common purpose, possible only when the goal involved killing a terrorist? The question nagged at me. For all the pride and satisfaction I took in the success of our mission in Abbottabad, the truth was that I hadn't felt the same exuberance as I had on the night the health care bill passed. I found myself imagining what America might look like if we could rally the country so that our government brought the same level of expertise and determination to educating our children or housing the homeless as it had to getting bin Laden; if we could apply the same persistence and resources to reducing poverty or curbing greenhouse gases or making sure every family had access to decent day care. I knew that even my own staff would dismiss these notions as utopian. And the fact that this was the case, the fact that we could no longer imagine uniting the country around anything other than thwarting attacks and defeating external enemies, I took as a measure of how far my presidency still fell short of what I wanted it to be - and how much work I had left to do.