In order to deal with all the medical cost demands and other challenges in the U.S., as we look to raise that revenue, the rich will have to pay slightly more. That's quite clear.

The spread of online information isn't just good for charities. It's also good for donors. You can go to a site like Charity Navigator, which evaluates nonprofits on their financial health as well as the amount of information they share about their work.

So not only are we saving lives now, we're creating the incentive for the breakthroughs that over the next generation will mean we can take AIDS, malaria and TB and bring those numbers dramatically down.

The best teacher is very interactive.

You don't go to other books and take little pieces because although say a romantic scene may have been many times before all the details of who it is, where it is, are so intertwined in that text that it's easier to write it from scratch.

I appoint the laziest person to do the hardest job as they'll find the easiest way to do it

Energy innovation is not a nationalistic game.