I recently stumbled across @dotmudge's talk from Defcon 21: Unexpected Stories - From a Hacker Who Made It Inside the Government. It's a really interesting talk focused on stories describing the relationships between the hacker community and the US government.
After the stories, Joe Grand talked about some quotes he remembered Peiter Zatko saying when they were together at the l0pht. Mudge apparently said their two goals were: "making a dent in the universe" and "do what we want to do without losing money".