I've always viewed the Paris Agreement as a starting point. If you look at all the commitments that have been made by all the countries, it's still not sufficient to deal with the very dangerous situation we face. What it has done is that it created an architecture whereby as technology improves, as we find new clean sources of energy, as we make our economies more efficient, then gradually we can turn up the dial and improve the outcomes of Paris.

If you're willing to put in the work, the idea is that you should be able to raise a family and own a home, not go bankrupt because you got sick, 'cause you've got some health insurance that helps you deal with those difficult times; that you can send your kids to college; that you can put some money away for retirement. That's all most people want. Folks don't have unrealistic ambitions. They do believe that if they work hard, they should be able to achieve that small measure of an American dream.

The values that we share - freedom of speech, freedom of religious practice, freedom for civil society, free and fair elections, all the innovation that's been created through a market-based economy - those things are ultimately going to be the path for us to continue into a better future. I hope that, despite some of the challenges we have, that people appreciate that.

People who have health insurance are benefiting in all sorts of ways that they may not be aware of, everything from no longer having lifetime limits on the claims that they can make to seniors getting prescription drug discounts under Medicare to free mammograms.

Physically, I feel probably as good as I've ever felt. And I've got as much energy as I ever did. But what you feel after eight years - and I think you'd feel this no matter what, but anytime you have a big transition, it gets magnified - is time passes.

A central notion in the Affordable Care Act was we had an inefficient system with a lot of waste that didn't also deliver the kind of quality that was needed that often put health care providers in a box where they wanted to do better for their patients, but financial incentives were skewed the other way... We don't need to reinvent the wheel; you're already figuring out what works to reduce infections in hospitals or help patients with complicated needs.

I think I did in the sense that there's a whole generation coming up behind us that was engaged, inspired, worked for change during the course of my presidency, saw what was possible. And that generation, it's coming.