So, for me, working with larger companies has often been very satisfying, precisely because of the ability of bringing critical mass to bear on a given effort.

Henry Kissinger once told me he was very concerned about the Internet's impact on people's ability to absorb information in a concentrated way, because we've become accustomed to looking up something, getting a snippet and being satisfied with that - as opposed to reading through and considering a weighty tome that goes into great depth.

Although I've had several major career changes, I was extremely hesitant about making some of them.

There is a project that's underway called the interplanetary Internet. It's in operation between Earth and Mars. It's operating on the International Space Station. It's part of the spacecraft that's in orbit around the Sun that's rendezvoused with two planets.

I like having a paperback original. And until literature catches up with the culture - the violence, language, syntax, compression, concision, complexity and diversity that the Internet offers - books still make sense.

With technology tracking us everywhere we go, 'cosplay' might become our best defense against surveillance.

When I became CEO, I was really worried that we were in commoditized segments that were mature and no longer growing. So we made a radical pivot into health technology because that is one of the world's unmet needs.

Stone Age. Bronze Age. Iron Age. We define entire epics of humanity by the technology they use.