to be happy with a man, you must understand him a lot and love a little.
to be happy with a woman, you must love her a lot and not try to understand her at all.
Lonngevity
Married men live longer than single man do, but married men are a lot more willing to die.
Propensity to change
A woman marries a man expecting he'll change, but he doesn't.
A man marries a woman expecting that she won't change, and she does.
Discussion technique
A woman has the last word in any argument.
Anything a man says after that is the beginning of a new argument.