Barack Obama: “We will not sit down with Iran just for the sake of talking.”

Your task is not to impose litmus tests.

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.

a belief that our military and law enforcement owe allegiance not to any president or political party, but to the people and our constitution … a belief in the peaceful transfer of power