When our memories outweigh our dreams, it is then that we become old.

I have news for the forces of greed and the defenders of the status quo: your time has come - and gone. It's time for change in America.

We simply have to transition from an economy based almost exclusively on oil and coal and natural gas to one that's far more diversified, that uses solar energy, and wind energy, and the power of the tides, and bio-mass energy, and eventually, develops hydrogen.

Four years ago nobody but nuclear physicists had ever heard of the Internet. Today even my cat, Socks, has his own web page. I'm amazed at that. I meet kids all the time, been talking to my cat on the Internet.

The problem with ideology is if you got an ideology, you already got your mind made up, you know all the answers, and that makes evidence irrelevant and argument a waste of time, so you tend to govern by assertion and attack. The problem with that is that discourages thinking and gives you bad results.

Nothing we do in this great capital can change the fact that factories or information can flash across the world, that people can move money around in the blink of an eye... Nothing can change the fact that technology can be adopted, once created, by people all across the world and then rapidly adapted in new and different ways by people who have a little different take on the way that technology works.

We have a unique opportunity to unite America, urban and rural, coastal and midwestern, red and blue, under the banner of a truly unifying national effort. We can start right now.