If you want a future of shared prosperity, where the middle class is growing and poverty is declining, where the American Dream really is alive and well again, and where the United States remains the leading force for peace and justice and prosperity in a highly competitive world, you have to vote for Barack Obama.

I think the Democrats are going to have to be willing to give up, maybe, some short-term political gain by whipping up fears on some of these things - if it's a reasonable Social Security proposal, a reasonable Medicare proposal. We've got to deal with these things. You cannot have health care devour the economy.

If you believe in making change from the bottom up, if you believe the measure of change is how many people's lives are better, you know it's hard and some people think it's boring. Speeches like this are fun, actually doing the work is hard.

I got a letter from 13-year-old Ryan from Belfast. Now, Ryan, if you're out in the crowd tonight, here's the answer to your question. No, as far as I know, an alien spacecraft did not crash in Roswell, New Mexico, in 1947. And, Ryan, if the United States Air Force did recover alien bodies, they didn't tell me about it, either, and I want to know.

I don't think I would have become President if it were not for my school music program.

...Nixon's subversion [of the consititution] consisted of: One presidental lie; one invocation of presidental privilege, and zero criminal offences.

If you believe in a security strategy - a strategy of more friends and fewer enemies, a strategy of greater cooperation and a strategy of keeping America better at home as we grow more diverse - we have to build the minds and hearts to build this kind of world.