Any society that would give up a little liberty to gain a little security will deserve neither and lose both. (Benjamin Franklin)

Have a look at Privacy vs. Security: A False Dichotomy, which is an excellent blog post with a link to a radio show where an artist, a lawyer, a hacker, an economist, and an entrepreneur share their ideas on the meaning of privacy in the 21st century. You can also read a teenager's thoughts on The Importance and Benefits of Diversity.