Might as well start gathering a few nice quotes and make a div non-table-breaking box for them when I have a few.
"A little rudeness and disrespect can elevate a meaningless interaction to a battle of wills and add drama to an otherwise dull day." --Calvin, Calvin and Hobbes
"To be honest, I think the thing that makes Wikipedia a "laughing stock" is not many articles on the minutia of television or other fiction, but the seriousness with which we take ourselves." --Ursasapien, Wikipedia:Television_episodes/RFC_Episode_Notability
"When applying arcane and often confusing policy to users who have little understanding of it, administrators and senior editors have a responsibility to proactively communicate in more detail to get the right message out. We cannot force the editor to listen and understand, but failing to make the effort to explain it to them adequately is assuming bad faith and unacceptable behavior on Wikipedia. ... please take the time to help people."
"No, [Wikipedia] is not a social networking site, but it surely works better if the denizens here behave in at least as polite a manner as they would IRL."... "for Wikipedia to succeed, ultimately, it needs the goodwill of gazillions of people making gazillion-squared such drops in the bucket." --David_in_DC, Wikipedia_talk:Editors_matter
"This makes me shudder."... "New page patrol is a two way street, you have to be willing to lend a hand to keep useful articles from being deleted because of technicalities." --Anetode, WP:AN
"They start off tending the flowers and mowing the lawn, picking up the odd crisp packet or beer can, and they end up brandishing pitchforks at anyone who even looks like they might be about to step on the grass - and it's all an incremental process, and at each step along the way they're still firmly convinced that they're contributing to the overall good of Wikipedia." - Unknown. Let's be honest, folks: this is probably something for each of us to consider.
"Point taken, and mine withdrawn." --Jonpin, Talk:Smoot
"The nominator has never been involved in this article; has nothing on the talk page; has not even made any statement that anything is wrong with this article; and has simply thrown up a deletion notice." --RandomCritic, AFD/Planets in Science Fiction
"The more laws and order are made prominent, the more thieves and robbers there will be." --Laozi
"While I agree that popularity != notability, I also think that AfD bears a remarkable resemblance to a random-number generator when anything borderline goes before it. ... I find it hard to draw any specific standards from the results of the AfDs" --Argyriou, Wikipedia talk:Village pump
"If it offends you, do not be surprised. In Wikipedia there are entries enough to offend us all." --Farlane, Talk:Matt Harding
"Community is built by allowing the free activity and interaction of members, not by blocking harmless behavior even if many or even most think it "useless." If something is useful to my neighbor, it's useful even if I have no need of it at all." --Ned Scott, here
"Readers should not judge the importance of topics based on their coverage in Wikipedia, nor assume that a topic is important merely because it is the subject of a Wikipedia article." --The content disclaimer
"Beware the WikiPirates
They love to wield their clout
All day they'll argue details
That no one cares about" -- Tom Smith; the rest of the song is not quotable without partisanship.
"I do wonder how many AN/I threads and ArbCom cases we need before we, as a community, realize that releasing one's anger into discussions isn't helping us improve this encyclopedia. An explosion of anger might help an angry person cool off; it has been demonstrated a rather exhaustive number of times that it doesn't help Wikipedia get better." --JayHenry
"Thank you for your approval, but I don't think I have the time to serve adequately on the Arbitration Committee. Moreover, I fear that after a couple of cases you'd see me propose remedies like this: "Resolved, that both parties are mindless jerks who'll be the first up against the wall when the Revolution comes."" --Fubar Obfusco, on his talk page