Barack Obama: “human progress is neither automatic nor inevitable.”

We’ve now fought a war, spent billions and billions of dollars, you know, put enormous strain on our military. A lot of people have died. And it feels like we’re back where we were before we started the war, except maybe a little bit worse…

We designed the center not to be some lifeless mausoleum.

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

Your task is not to impose litmus tests.