And most countries are now reducing the number of conscripts and increasing the professionals that are available because they're available on short notice.

For years, European leaders have pointed out that Europe is an economic giant, but a military pygmy.

And, perhaps most importantly, regional conflicts will again and again confront us with a cruel choice between costly engagement and costly indifference.

I believe that the organisers of this conference have chosen a very timely subject for our discussion - because the 21st century will confront us with an entirely new set of challenges.

That's what I love about the Internet. Even if it's small-scale and you're just posting on a forum, that's an uncensored expression. That's what I love.

I think Trump uses social media as a way to get to people's lowest common denominator. He uses it to incite fear. He talks about simplistic ideas.

We humans have a love-hate relationship with our technology. We love each new advance and we hate how fast our world is changing... The robots really embody that love-hate relationship we have with technology.

People wanted me to do a CD-ROM of 'Hitchhiker's,' and I thought, 'No, no.' I didn't want to just sort of reverse-engineer yet another thing from a book I'd already written. I think that the digital media are interesting enough in their own right to be worth originating something in.