A few months ago, and again this week, bin Laden publicly vowed to publicly wage a terrorist war against America, saying, and I quote, "We do not differentiate between those dressed in military uniforms and civilians. They're all targets." Their mission is murder, and their history is bloody.

At the dawn of the 21st century, a free people must now choose to shape the forces of the Information Age and the global society, to unleash the limitless potential of all our people, and yes, to form a more perfect union.

I think it's crazy for us to play games with our children's future. We know what's happening to the climate, we have a highly predictable set of consequences if we continue to pour greenhouse gases into the atmosphere.

You cannot have an integrated world and have your say all the time. America can lead the world towards that, but we cannot dominate and run the world in that direction. There is a big difference.

In our efforts to battle terrorism and cyber attacks and biological weapons, all of us must be extremely aggressive. We must protect our people from danger and keep America safe and free.

There's this whole problem of trafficking, which has gotten worse in the economic downturn, which disproportionately affects young women, but also affects some young men who are sold into bondage, into basically servitude for indebted work that they can often never escape from.

The era of big government is over, but the era of big challenge is not. We need an era of big citizenship. There are many important people at this summit, but the most important title is 'citizen.' This is our republic. Let us keep it!