Prosperity without freedom is just another form of poverty. Because there are aspirations that human beings share -- the liberty of knowing that your… - Barack Obama

It was Adam Smith, the father of free-market economics, who once said, “They who feed, clothe, and lodge the whole body of the people should have such a share of the produce of their own labor as to be themselves tolerably well fed, clothed, and lodged.” And for those of you who don’t speak old-English let me translate. It means if you work hard, you should make a decent living. If you work hard, you should be able to support a family.

The great historian John Hope Franklin, who helped to get this museum started, once said, “Good history is a good foundation for a better present and future.” He understood the best history doesn’t just sit behind a glass case; it helps us to understand what’s outside the case. The best history helps us recognize the mistakes that we’ve made and the dark corners of the human spirit that we need to guard against. And, yes, a clear-eyed view of history can make us uncomfortable, and shake us out of familiar narratives. But it is precisely because of that discomfort that we learn and grow and harness our collective power to make this nation more perfect.

Faced with this violence, we wonder if the divides of race in America can ever be bridged. We wonder if an African-American community that feels unfairly targeted by police, and police departments that feel unfairly maligned for doing their jobs, can ever understand each other’s experience. We turn on the TV or surf the Internet, and we can watch positions harden and lines drawn, and people retreat to their respective corners, and politicians calculate how to grab attention or avoid the fallout. We see all this, and it’s hard not to think sometimes that the center won't hold and that things might get worse. I understand how Americans are feeling. But, Dallas, I’m here to say we must reject such despair. I’m here to insist that we are not as divided as we seem. And I know that because I know America. I know how far we’ve come against impossible odds. I know we’ll make it because of what I’ve experienced in my own life, what I’ve seen of this country and its people -- their goodness and decency --as President of the United States. [...] I see what's possible when we recognize that we are one American family, all deserving of equal treatment, all deserving of equal respect, all children of God. That’s the America that I know.