You can read here. All in all, Obama played it safe, focusing on nuclear proliferation, global warming and the need to combat terrorism. And he echoed Reagan's "Tear down this wall" speech with this:

Sixty years after the airlift, we are called upon again. History has led us to a new crossroad, with new promise and new peril. When you, the German people, tore down that wall -- a wall that divided East and West; freedom and tyranny; fear and hope -- walls came tumbling down around the world. From Kiev to Cape Town, prison camps were closed, and the doors of democracy were opened. Markets opened too, and the spread of information and technology reduced barriers to opportunity and prosperity. While the 20th century taught us that we share a common destiny, the 21st has revealed a world more intertwined than at any time in human history.

The fall of the Berlin Wall brought new hope. But that very closeness has given rise to new dangers -- dangers that cannot be contained within the borders of a country or by the distance of an ocean.

And in not-so-veiled jab at McCain, Obama repeated the "never again" refrain:

Will we stand for the human rights of the dissident in Burma, the blogger in Iran, or the voter in Zimbabwe? Will we give meaning to the words “never again” in Darfur?