Despite my real concerns, though, I confess I remain an incorrigible optimist. America has overcome daunting odds time and again. At our nation's birth, almost no serious thinker in Europe thought a democracy could survive long without devolving into chaos or tyranny Yet almost 250 years later, here we stand. For much of our history, the promise of equal treatment under the law looked more like an unserious fiction than an earnest ambition. Yet while much remains to be done, we have made many strides to realize that promise, from the Civil War to the Civil Rights Act of 1964. World wars, terrorist attacks, political assassinations, economic depressions, the fall of other countries to communism and fascism, and so much more have tested our nation, too. Still, America remains the greatest beacon of liberty the world has ever known. The ideals embodied in our Declaration of Independence- that each of us enjoys certain inalienable rights, that all of us are created equal, that governments derive their just power from the consent of the governed- have inspired billions of people around the world and captured truths th