Liberty requires security without intrusion, security plus privacy.

Surveillance of power is one of the most important ways to ensure that power does not abuse its status. But, of course, power does not like to be watched.

Hardware is easy to protect: lock it in a room, chain it to a desk, or buy a spare. Information poses more of a problem. It can exist in more than one place; be transported halfway across the planet in seconds; and be stolen without your knowledge.

Corporate and government surveillance aren't separate; they're an alliance of interests.

Societies without a reservoir of people who don't follow the rules lack an important mechanism for societal evolution. Vibrant societies need a dishonest minority; if society makes its dishonest minority too small, it stifles dissent as well as common crime.

Amateurs hack systems, professionals hack people.

Think of your existing power as the exponent in an equation that determines the value of information. The more power you have, the more additional power you derive from the new data.