Barack Obama: “I think that four years is OK. Eight years would be a problem. I would be concerned about a sustained period in which…”

there will be no kings"

Every president here today, as different as we are, has tried our best to uphold the values that John McCain and Mitt Romney believed in no less than I did.

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.

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