Barack Obama: “A stable and growing middle class is essential to the kind of economic growth that we need in the country.”

The success of this experiment was never a given.

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…

there will be no kings"

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