Effective philanthropy requires a lot of time and creativity - the same kind of focus and skills that building a business requires.

The ideal thing would be to have a 100 percent effective AIDS vaccine. And to have broad usage of that vaccine. That would literally break the epidemic.

Middle-income countries are the biggest users of GMOs. Places like Brazil.

Having kids has been a fantastic thing for me. It's meant that I'm a little more balanced. In my twenties I worked massively, hardly took vacation at all. Now, I, with the help of my wife, I'm always making sure I've got a good balance of how I spend my time.

President [George] Bush made the U.S. absolutely the leader, between its own PEPFAR, and it's been by far the biggest Global Fund donor. That's a legacy.

Now you have to be a collaborator and you have to bring on governments and convince people.

The ability of a successful company to add functionality to its product has long been upheld.