We cannot know for certain how long we have here. We cannot foresee the trials or misfortunes that will test us along the way. We cannot know God's p… - Barack Obama

Citizenship demands a sense of common purpose; participation in the hard work of self-government; an obligation to serve to our communities.

Suppressing ideas never succeeds in making them go away. America respects the right of all peaceful and law-abiding voices to be heard around the world, even if we disagree with them. And we will welcome all elected, peaceful governments - provided they govern with respect for all their people. This last point is important because there are some who advocate for democracy only when they are out of power; once in power, they are ruthless in suppressing the rights of others. No matter where it takes hold, government of the people and by the people sets a single standard for all who hold power: you must maintain your power through consent, not coercion; you must respect the rights of minorities, and participate with a spirit of tolerance and compromise; you must place the interests of your people and the legitimate workings of the political process above your party. Without these ingredients, elections alone do not make true democracy.

The wall belongs to history. But we have history to make as well. And the heroes that came before us now call to us to live up to those highest ideals -- to care for the young people who can't find a job in our own countries, and the girls who aren't allowed to go to school overseas; to be vigilant in safeguarding our own freedoms, but also to extend a hand to those who are reaching for freedom abroad. This is the lesson of the ages. This is the spirit of Berlin. And the greatest tribute that we can pay to those who came before us is by carrying on their work to pursue peace and justice not only in our countries but for all mankind.