One of my friends (B.B.) has a favorite saying that I particularly like: Never assume malice when incompetence will suffice.
I suppose it's a variation of Occam's Razor for graduate school / bureaucracies. I've been on both ends of this -- being dissed by faculty and not knowing why, and now being a faculty member who is swamped by work and doesn't always get back to things as quickly as she should. Sigh.
Other favorite sayings?
That adage is known as "Hanlon's razor".
Fazal - Thanks! For more information: http://en.wikipedia.org/wiki/Hanlon's_razor
(yeah, yeah, wikipedia, so shoot me)
I always liked "Try to look unimportant; they might be low on ammunition."