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.
A DOCTOR QUOTE FROM
DOCTOR WHO EPISODE DEATH IN HEAVEN
Everyone in London just clapped and went "wee!"
Hush, I'm trying to count.