What the NSA really wants is the capability of retrospective investigation. They want to have a perfect record of the last five years of your life, so when you come to their attention, they can know everything about you. I'm not down with that, but [Bill] Binney was trying to create something like that.

The [Barack] Obama administration almost appears as though it is afraid of the intelligence community. They're afraid of death by a thousand cuts - you know, leaks and things like that.

Citizens with a conscience are not going to ignore wrong-doing simply because they'll be destroyed for it: the conscience forbids it.

Since the revelations, we have seen a massive sea change in the technological basis and makeup of the Internet.

You are also asked to take an oath, and that's the oath of service. The oath of service is not to secrecy, but to the Constitution - to protect it against all enemies, foreign and domestic. That's the oath that I kept, that James Clapper and former NSA director Keith Alexander did not. You raise your hand and you take the oath in your class when you are on board. All government officials are made to do it who work for the intelligence agencies - at least, that's where I took the oath.

If even one country, an Iceland for example, defects from this global legislative bargain and says no, we're not going to enforcement mass surveillance here. We're not going to do that. That's where all of the data centres, all the service providers in the world will relocate to. And I think that gives us a real chance to see a more liberal than authoritarian future.

We need the security standards to apply to the internet. We need to be able to trust that when we send our emails through Verizon, that Verizon isn't sharing with the NSA, that Verizon isn't sharing them with the FBI or German intelligence or French intelligence or Russian intelligence or Chinese intelligence.