These steps are all critical to keeping America secure. But I believe with every fiber of my being that in the long run we also cannot keep this country safe unless we enlist the power of our most fundamental values. The documents that we hold in this very hall -- the Declaration of Independence, the Constitution, the Bill of Rights -- these are not simply words written into aging parchment. They are the foundation of liberty and justice in this country, and a light that shines for all who seek freedom, fairness, equality, and dignity around the world.

I stand here today as someone whose own life was made possible by these documents. My father came to these shores in search of the promise that they offered. My mother made me rise before dawn to learn their truths when I lived as a child in a foreign land. My own American journey was paved by generations of citizens who gave meaning to those simple words -- "to form a more perfect union." I've studied the Constitution as a student, I've taught it as a teacher, I've been bound by it as a lawyer and a legislator. I took an oath to preserve, protect, and defend the Constitution as Commander-in-Chief, and as a citizen, I know that we must never, ever, turn our back on its enduring principles for expedience sake.

I make this claim not simply as a matter of idealism. We uphold our most cherished values not only because doing so is right, but because it strengthens our country and it keeps us safe. Time and again, our values have been our best national security asset -- in war and peace; in times of ease and in eras of upheaval.

Fidelity to our values is the reason why the United States of America grew from a small string of colonies under the writ of an empire to the strongest nation in the world.

It's the reason why enemy soldiers have surrendered to us in battle, knowing they'd receive better treatment from America's Armed Forces than from their own government.

It's the reason why America has benefitted from strong alliances that amplified our power, and drawn a sharp, moral contrast with our adversaries.

It's the reason why we've been able to overpower the iron fist of fascism and outlast the iron curtain of communism, and enlist free nations and free peoples everywhere in the common cause and common effort of liberty.

From Europe to the Pacific, we've been the nation that has shut down torture chambers and replaced tyranny with the rule of law. That is who we are. And where terrorists offer only the injustice of disorder and destruction, America must demonstrate that our values and our institutions are more resilient than a hateful ideology.

After 9/11, we knew that we had entered a new era -- that enemies who did not abide by any law of war would present new challenges to our application of the law; that our government would need new tools to protect the American people, and that these tools would have to allow us to prevent attacks instead of simply prosecuting those who try to carry them out.

Unfortunately, faced with an uncertain threat, our government made a series of hasty decisions. I believe that many of these decisions were motivated by a sincere desire to protect the American people. But I also believe that all too often our government made decisions based on fear rather than foresight; that all too often our government trimmed facts and evidence to fit ideological predispositions. Instead of strategically applying our power and our principles, too often we set those principles aside as luxuries that we could no longer afford. And during this season of fear, too many of us -- Democrats and Republicans, politicians, journalists, and citizens -- fell silent.