I don't go out and play football and stuff - that's not me. I want to think, I want to build, I want to talk, I want to create.

Do we want to emulate China in the way that China emulates the West? I think, for most Americans, the answer to that question would be no.

After 9/11, many of the most important news outlets in America abdicated their role as a check to power - the journalistic responsibility to challenge the excesses of government - for fear of being seen as unpatriotic and punished in the market during a period of heightened nationalism.

When we look at the full-on mass surveillance watching everyone in the country, in the United States, it doesn't work. It didn't stop the attacks in Boston. The marathon bombings. Where again, we knew who these individuals were. It didn't stop the Underwear Bomber, whose father walked into an embassy and warned us about this individual before he walked onto an airplane. And it's not going to stop the next attacks either. Because again, they're not public safety programmes. They're spying programmes. They are valuable for spying.

When governments go too far to punish people for actions that are dissent rather than a real threat to the nation, they risk delegitimizing not just their systems of justice, but the legitimacy of the government itself. Because when they bring political charges against people for acts that were clearly at least intended to work in the public interest, they deny them the opportunity to mount a public-interest defense.

You simply have to eventually fall under suspicion from somebody even by a wrong call. And then they can use this system to go back in time and scrutinize every decision you've ever made, every friend you've ever discussed something with. And attack you on that basis to sort to derive suspicion from an innocent life and paint anyone in the context of a wrongdoer.

Privacy is a function of liberty.