Ferengi Rules of Acquisitions...Let's Quote Them.
I'll start this thread with my favorite rule [#76] Quarrk mentioned in the season 2 episode THE HOMECOMING.
#76. Every once in a while declare peace. It confuses the hell out of your enemies.
Don't be a monk. Monks are NOT cool!
MATT SMITH DOCTOR IN "THE BELLS OF SAINT JOHN"