First saw a link to this stuff here on Darrell's blog I don't know how any of these I actually agree with (seems more like the ethos of the hacker than a proper methodology)...anyway:

"Hey, I knew that methodology when it was still just a complaint."

"Experience trumps formal estimation."

"Smells like chicken!"

"We do not model for the sake of modeling; we model so that an implementation can be made."

"Fundamentally most software development methodologies strive to improve communication and shorten the time of gaining experience."

"Experience is better than iterations."

"If you know what to do then why don't you do it?"

"Revolution is for visionaries. Evolution is for apes." This one will get me in trouble for sure!

"You know with a flat-head screw driver, a pair of vice-grips, and a hammer you can fix almost anything but you can build almost nothing!"

"Definition of Shared Code: Code that someone else wrote that you don't trust."

"Don't tell me it is my problem and how you want it fixed. If it is my problem I will fix it the way I want."

"A sheep herder is a sheep manager. A shepherd is a sheep leader."

Geoffrey Slinker