modern mathematics...:P

Equation 1
Human = eat + sleep + work + enjoyDonkey = eat + sleepTherefore,Human = Donkey + work + enjoyTherefore,Human - enjoy = Donkey + workIn other words,Human that don't know enjoy = Donkey that work
===================================================
Equation 2
Men = eat + sleep + earn moneyDonkeys = eat + sleepTherefore,Men = Donkeys + earn moneyTherefore,Men - earn money = DonkeysIn other words,Men that don't earn money = Donkeys
====================================================
Equation 3
Women = eat + sleep + spendDonkeys = eat + sleepTherefore,Women = Donkeys + spendTherefore,Women - spend = DonkeysIn other words,Women that don't spend = Donkeys
=====================================================
To Conclude:
From Equation 2 and Equation 3
Men that don't earn money = Women that don't spend.So, Men earn money not to let women become Donkeys! (Postulate 1)
And, Women spend not to let men become Donkeys! (Postulate 2)
So, we have...
Men+ Women = Donkeys + earn money + Donkeys + spend money
Therefore...
from Postulates 1 and 2,
we can conclude Man + Woman = 2 Donkeys that live happily together!