Here is the full list of Rumsfeld's rules:
http://www.freerepublic.com/focus/f-news/595267/posts These two are my favorites:
"Hire paranoids. Even though they have a high false alarm rate, they discover all plots." (Herman Kahn)
"Never attribute to a conspiracy that which can be explained by incompetence." (Judge Larry Silberman)
It helps keep your balance of things.