Barack Obama: “You guys are the ones who are going to define the contours of the 21st century.”

It's a way to honor her trailblazing leadership, and inspire visitors to follow in her footsteps.

I obviously have a room in his head.

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…

helped lead some of the most significant movements for change in human history