My favorite is the gloriously articulate Dorothy Parker, queen of the Algonquin Round Table.
Today, I ran across this particular gem that seems to relate nicely to my current mood/situation:
Experience
Some men break your heart in two,
Some men fawn and flatter,
Some men never look at you;
And that cleans up the matter.
A toast to you, Madam Dorothy, and our equally lamentable experiences with men.