Barack Obama: “When somebody tells us we can't, we say, yes we can.”

That's what I hope every visitor to this center takes away from their experience.

For almost four decades, Nancy Pelosi served the American people and worked to make our country better.

The success of this experiment was never a given.

I think when you understand the complexities of America and the contradictions of America, I don’t think it makes you love it less. I think it makes you love it more.