I nominate ChiefCowpie, Likerish and jailmate. jailmate may come off as a total mental case but theres sure lots of wisdom behind his words.
I'll vote for Themnax. He's hella wise! Also HerbuhLovuh (aka Herbamatey or Herbal), but I don't think he posts here anymore...
*gasp* .... thank you maryjane! *blush* I was going to say, Peanuts has always had wonderful comments to give me and seems pretty wise but my vote goes to Moominmama because she has this motherly wiseness about her.... she deserves the prise of a mahuuusive hug!
More than once I have been impressed by the wisdom of FreakyJoeMan. Occam has a (razor sharp) good sense for knowing the difference between B.S. and the Bigger Idea. And -GOD-, well, he has a gift for laughter. He he has a great sense of humor, which is surely a special form of wisdom.
There's way too many... I guess there is such a thing as to having too much wisdom. Many people here do... well, more than they really need to begin with.