How we deal with the AIDS epidemic should be one of the greatest ways that the world gets measured. The report card for this era.

I never took a day off in my twenties. Not one. And I'm still fanatical, but now I'm a little less fanatical.

China is certainly an important player in the global economy, and a widespread AIDS epidemic would threaten that growth.

The government is somewhat inept, but the private sector is inept in general. How many companies do venture capitalists invest in that go poorly? By far most of them. However, every once in a while a Google or a Microsoft comes out, so people keep giving them money.

Often you have to rely on intuition.

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

If you've found some way to educate yourself about engineering, stocks, or whatever it is, good employers will have some type of exam or interview and see a sample of your work.