I believe that when [senator Ron] Wyden and [senator Mark] Udall asked about the scale of this, they [the NSA] said it did not have the tools to provide an answer. We do have the tools and I have maps showing where people have been scrutinised most. We collect more digital communications from America than we do from the Russians.

The 'music' is not an open court and a fair trial.

I'm ultimately satisfied that we know a little bit more about how the world really works.

I don't think it is the most important thing. I think it is the fact that the director of national intelligence gave a false statement to Congress under oath, which is a felony. If we allow our officials to knowingly break the law publicly and face no consequences, we're instituting a culture of immunity, and this is what I think historically will actually be considered the biggest disappointment of the [Barack] Obama administration.

One of the kind of unexpectedly liberating things of becoming this global fugitive is the fact that you don't worry so much about tomorrow. You think more about today. And unexpectedly, I like that very much.

Because, remember, I didn't want to change society. I wanted to give society a chance to determine if it should change itself.

The issue is we're losing leverage. Governments are increasingly getting more power and we are increasingly losing our ability to control that power, and even to be aware of that power.