I don't think you're as capable of handling lack of sleep or whatever challenges you throw at your body as you get older. However, I never missed a day of work.

Great organizations demand a high level of commitment by the people involved. Eliminate politics, by giving everybody the same message. Keep a flat organization in which all issues are discussed openly. Empower teams to do their own things.

For Africa to move forward, you've really got to get rid of malaria.

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.

We really have to work hard to remind people even though this is far away, that's it's probably the most generous thing governments have ever come together to do. Since World War II, this new institution is the only one that's emerged and is saving all these lives.

Every company can choose whether to lead or follow the emerging digital trends.

I'm cooler than you. WAAAY cooler.