[Warren Buffett ] met with all sorts of different groups about a lot of different things, but yes, he took the time, he listened and he wanted to understand about some of the different diseases and the strength of the American role in doing all these things.

Make sure people get educated, help out with health emergencies. Those things, the government should do. That's 96 per cent of the economy, those two sectors.

It’s useful to compare our preparations for epidemics with our preparations for war.

In terms of doing things I take a fairly scientific approach to why things happen and how they happen. I don't know if there's a god or not, but I think religious principles are quite valid.

Teaching's hard! You need different skills: positive reinforcement, keeping students from getting bored, commanding their attention in a certain way.

The fight against AIDS in China is already well underway. The Chinese government and other funders are providing major support, and they'll continue to bear primary responsibility for delivering prevention and treatment.

Historically, privacy was almost implicit, because it was hard to find and gather information. But in the digital world, whether it's digital cameras or satellites or just what you click on, we need to have more explicit rules - not just for governments but for private companies.