We talk a lot about operational control, and that's having a better understanding of who's coming in and who's leaving, what the threat really is. We're never really going to get that.

Cairo has flights into JFK, and they're going to open another one at Dulles... As long as we have flights coming directly to the United States, I think it's putting Americans at risk.

I would argue it should be a policy to defeat ISIS where they are, where they exist and prevent them from coming into the United States.

Without - you know, good intelligence stops plots against the homeland. Without that intelligence, we cannot effectively stop it.

In order to build a great technology company, you have to hire lots of incredibly smart people. It's a total waste to have lots of big brains but not let them work on your biggest problems.

Predation is part of the everyday life of capitalism, in sectors as mainstream as pharmaceuticals, software and oil - where people's money, their data, their time and their attention are routinely taken in fundamentally asymmetrical exchanges.

It's great, the number of people that I'm reaching through the Internet - I've done some wonderful interviews - but I miss touching the bodies. I miss shaking hands, looking into people's faces and saying, 'Hello, how are you doing? Thank you for playing my music.'

I try to be careful because technology changes so much over the years. But some things don't change. Kids and parents have disagreements, kids try to manipulate, parents try to sit down with rules and regs. That part never changes.