Me and my dad are the biggest promoters of an estate tax in the US. It's not a popular position.

Eventually you won't think of 'the Internet business.' You'll think of it more like news, weather, sports, but even that taxonomy isn't clear.

Programs today get very fat; the enhancements tend to slow the program down because people put in special checks. When they want to add some feature, they’ll just stick in these checks without thinking about how they might slow the thing down.

I want to admit that I am an optimist. Any tough problem, I think it can be solved.

Climate change is a terrible problem, and it absolutely needs to be solved. It deserves to be a huge priority.

We make the future sustainable when we invest in the poor, not when we insist on their suffering.

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.