And most dangerously, we see it in the way that religion is used to justify the murder of innocents by those who have distorted and defiled the great religion of Islam, and who attacked my country from Afghanistan. These extremists are not the first to kill in the name of God; the cruelties of the Crusades are amply recorded. But they remind us that no Holy War can ever be a just war. For if you truly believe that you are carrying out divine will, then there is no need for restraint — no need to spare the pregnant mother, or the medic, or the Red Cross worker, or even a person of one’s own faith. Such a warped view of religion is not just incompatible with the concept of peace, but I believe it’s incompatible with the very purpose of faith — for the one rule that lies at the heart of every major religion is that we do unto others as we would have them do unto us.

Adhering to this law of love has always been the core struggle of human nature. For we are fallible. We make mistakes, and fall victim to the temptations of pride, and power, and sometimes evil. Even those of us with the best of intentions will at times fail to right the wrongs before us.

But we do not have to think that human nature is perfect for us to still believe that the human condition can be perfected. We do not have to live in an idealized world to still reach for those ideals that will make it a better place. The non-violence practiced by men like Gandhi and King may not have been practical or possible in every circumstance, but the love that they preached — their fundamental faith in human progress — that must always be the North Star that guides us on our journey.

For if we lose that faith — if we dismiss it as silly or naïve; if we divorce it from the decisions that we make on issues of war and peace — then we lose what’s best about humanity. We lose our sense of possibility. We lose our moral compass.

Like generations have before us, we must reject that future. As Dr. King said at this occasion so many years ago, “I refuse to accept despair as the final response to the ambiguities of history. I refuse to accept the idea that the ‘isness’ of man’s present condition makes him morally incapable of reaching up for the eternal ‘oughtness’ that forever confronts him.”

Let us reach for the world that ought to be — that spark of the divine that still stirs within each of our souls. (Applause.)

Somewhere today, in the here and now, in the world as it is, a soldier sees he’s outgunned, but stands firm to keep the peace. Somewhere today, in this world, a young protestor awaits the brutality of her government, but has the courage to march on. Somewhere today, a mother facing punishing poverty still takes the time to teach her child, scrapes together what few coins she has to send that child to school — because she believes that a cruel world still has a place for that child’s dreams.

Let us live by their example. We can acknowledge that oppression will always be with us, and still strive for justice. We can admit the intractability of deprivation, and still strive for dignity. Clear-eyed, we can understand that there will be war, and still strive for peace. We can do that — for that is the story of human progress; that’s the hope of all the world; and at this moment of challenge, that must be our work here on Earth.