One of my favorites is "Limited life experience + overgeneralization = advice" from Bucheit, which I think has to be understood as an important qualifier on everything said throughout all sessions.
-t
Ev/Biz recalling someone commenting on the early days of Twitter: "Twitter is like the Seinfeld of the Internet, a service about nothing.".
"It's important to do things that will make you uncomfortable." - Paul Bucheit