We can't keep weapons out of prisons; we can't possibly expect to keep them out of airports.

If you think technology can solve your security problems, then you don't understand the problems and you don't understand the technology.

The very definition of news is something that hardly ever happens. If an incident is in the news, we shouldn't worry about it. It's when something is so common that its no longer news - car crashes, domestic violence - that we should worry.

Liberty requires security without intrusion, security plus privacy.

Given the credible estimate that we've spent $1 trillion on anti-terrorism security

Anyone, from the most clueless amateur to the best cryptographer, can create an algorithm that he himself can't break.

Amateurs hack systems, professionals hack people.