The billion people who wake up every day trying to figure out if they have enough food to eat won't be at Davos.

OK, I have a nickname. My family calls me 'Trey' because I'm William the third. My dad has the same name, which is always confusing because my dad is well known, and I'm also known.

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.

The only big companies that succeed will be those that obsolete their own products before somebody else does.

The death of a child is an incredible tragedy all over the world. Back in 1990, about 12 percent of children were dying before they reached the age of 5.

The government is there day in and day out, if you want all kids to have education, if you want to run courts, if you want to have an army, if you want to have roads, you've got to have the taxation system that funds everything that you expect.

I agree with people like Richard Dawkins that mankind felt the need for creation myths. Before we really began to understand disease and the weather and things like that, we sought false explanations for them. Now science has filled in some of the realm – not all – that religion used to fill.