The reality is if we sit back and allow a few officials behind closed doors to launch offensive attacks without any oversight against foreign nations, against people we don't like, against political groups, radicals, and extremists whose ideas we may not agree with, and could be repulsive or even violent - if we let that happen without public buy-in, we won't have any seat at the table of government to decide whether or not it's appropriate for these officials to drag us into some kind of war activity that we don't want, but we weren't aware of at the time.

If the government or the parties won't address our needs, we will. It's about direct action, even civil disobedience.

My sole motive is to inform the public as to that which is done in their name and that which is done against them.

When the police officers knock on your door with a warrant, they don't expect you to give them a tour. It's supposed to be an adversarial process so that it's used in these extraordinary powers are applied only when there's no alternative. Only when they're absolutely necessary, and only when they're proportionate to the threat faced by these individuals.

I took what I knew to the public, so what affects all of us can be discussed by all of us in the light of day, and I asked the world for justice.

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.

If Congress is going to investigate baseball players about whether or not they told the truth, how can we justify giving the most powerful intelligence official, [James] Clapper, a pass? This is how J. Edgar Hoover ended up in charge of the FBI forever.