Lawyers from the NSA, as well as the UK's GCHQ, work very hard to search for loopholes in laws and constitutional protections that they can use to justify indiscriminate, dragnet surveillance operations that were at best unwittingly authorized by lawmakers.

I don't want to directly confront great powers, which we cannot defeat on their terms. They have more money, more clout, more airtime. We cannot be effective without a mass movement, and the American people today are too comfortable to adapt to a mass movement.

It's OK if we wiretap Osama bin Laden. I want to know what he's planning - obviously not him nowadays, but that kind of thing. I don't care if it's a pope or a bin Laden. As long as investigators must go to a judge - an independent judge, a real judge, not a secret judge - and make a showing that there's probable cause to issue a warrant, then they can do that. And that's how it should be done.

It's critical how we want to use these spy programs, these electronic capabilities, where we want to draw the line, and who should approve these programs, these decisions, and at what level, for engaging in operations that could lead us as a nation into a war.

Too often we forget that social and political movements don't happen overnight. They don't bring change immediately - you have to build a critical mass of understanding of the issues.

You are not even aware of what is possible. The extent of their capabilities is horrifying. We can plant bugs in machines. Once you go on the network, I can identify your machine. You will never be safe whatever protections you put in place.

I've been recognized every now and then. It's always in computer stores. It's something like brain associations, because I'll be in the grocery store and nobody will recognize me. Even in my glasses, looking exactly like my picture, nobody will recognize me. But I could be totally clean-shaven, hat on, looking nothing like myself in a computer store, and they're like, "Snowden?!"