The most important question of the 21st century is not what or how much, it is 'How?' How do you propose to turn your good ideas into positive changes in other people's lives? You must be the 'how generation.'

In the emerging global economy, everything is mobile: capital, factories, even entire industries. The only resource that's really rooted in a nation--and the ultimate source of all its wealth--is its people.

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.

It's good for young people to be angry about something.

The fights I fought... cost a lot --the fight for the assault-weapons ban cost 20 members their seats in Congress. The NRA is the reason the Republicans control the House.

I think it's very important, and I think that what young people will learn from my experience is that even presidents have to do that and there are consequences when you don't. But I also think that there will be a box score, and there will be that one negative, and then there will be the hundreds and hundreds and hundreds of times when the record will show that I did not abuse my authority as president, that I was truthful with the American people.

I think that most small amounts of marijuana have been decriminalized in some places, and should be. We really need a re-examination of our entire policy on imprisonment...Our imprisonment policies are counterproductive.