Equation 1

Human = eat + sleep + work + enjoy

Donkey = eat + sleep

Therefore: Human = Donkey + Work + enjoy

Therefore: Human-enjoy = Donkey + Work

In other words, A Human that doesn't know how to enjoy = Donkey that works.

++++++++++++ +++++++++ +++++++++ +++++++++ +++++++++ ++ ++

Equation 2

Man = eat + sleep + earn money

Donkey = eat + sleep

Therefore: Man = Donkey + earn money

Therefore: Man-earn money = Donkey

In other words Man who doesn't earn money = Donkey

++++++++++++ +++++++++ +++++++++ +++++++++ +++++++++ +

Equation 3

Woman= eat + sleep + spend

Donkey = eat + sleep

Therefore: Woman = Donkey + spend

Therefore: Woman - spend = Donkey

In other words, Woman who doesn't spend = Donkey

++++++++++++ +++++++++ +++++++++ +++++++++ +++++++++ +

To Conclude:

From Equation 2 and Equation 3

Man who doesn't earn money = Woman who doesn't spend

So Man earns money not to let woman become a donkey! And a woman spends not to let the man become a donkey!

So, We have:

Man + Woman = Donkey + earn money + Donkey + Spend money

Therefore from postulates 1 and 2, we can conclude

Man + Woman = 2 Donkeys that live happily together!