Seven decades of history have passed through this hall, in all of their richness and drama. Where I stand, the world has heard from presidents and premiers at the height of the Cold War. We have seen the foundation of nations. We have seen the ringleaders of revolution. We have beheld saints who inspired us with hope, rebels who stirred us with passion, and heroes who emboldened us with courage -- all here to share plans, proposals, visions, and ideas on the world's biggest stage.