Barack Obama: “The sacrifices are too significant, and the stakes are too high.”

I was a little tall for it.

I hope this center will serve as an affirmation of just how special, how precious our democracy truly is.

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.

Of course, we did not accomplish everything we set out to do. No administration does. Some of the exhibits reflect unfinished business, in some cases, my own shortcomings and mistakes, in some cases because - as a sign I kept on the…