I have spoken to all of them who are living. I didn't want to get into a Nancy Reagan thing about doing any séances. - Barack Obama

I wonder, sometimes, whether men and women in fact are capable of learning from history — whether we progress from one stage to the next in an upward course or whether we just ride the cycles of boom and bust, war and peace, ascent and decline.

Our challenges may be new. The instruments with which we meet them may be new. But those values upon which our success depends - honesty and hard work, courage and fair play, tolerance and curiosity, loyalty and patriotism - these things are old. These things are true. They have been the quiet force of progress throughout our history. What is demanded then is a return to these truths. What is required of us now is a new era of responsibility - a recognition, on the part of every American, that we have duties to ourselves, our nation, and the world, duties that we do not grudgingly accept but rather seize gladly, firm in the knowledge that there is nothing so satisfying to the spirit, so defining of our character, than giving our all to a difficult task.

Tonight, we give thanks to the countless intelligence and counterterrorism professionals who’ve worked tirelessly to achieve this outcome. The American people do not see their work, nor know their names. But tonight, they feel the satisfaction of their work and the result of their pursuit of justice. We give thanks for the men who carried out this operation, for they exemplify the professionalism, patriotism, and unparalleled courage of those who serve our country.