BASIC MATH
A wise man + smart woman = romance
A wise man + dumb woman = affair
Stupid man + smart woman = marriage
Stupid man + dumb woman = pregnancy
...
OFFICE MATH
A wise boss + smart employee = productive
A wise boss + dumb employee = production
Stupid boss + smart employee = promotion
Stupid boss + dumb employee = overtime
SHOPPING MATH
A man will pay 2 euros for 1 euro worth of the goods, which he needs.
A woman will pay 1 euro for 2 euro worth of the goods, which is not needed.
GENERALIZATIONS AND STATISTICS
A woman complains about the future until she gets married.
The man is not an ounce worried about the future, before he gets married.
A successful man = makes more than she has time to waste
A successful woman = to find such a man.
HAPPINESS
In order to be happy with her husband, a wife must understand him a lot and love a little bit.
In order to be happy with his wife, a man must love a lot, but not even try to understand.
CHANGE OF EXPECTATIONS
By marriage the wife expects that a he is going to change - in vain.
By marriage the man expects that she will not change - in vain.
DISCUSSION TECHNIQUE
The woman has the last word in every dispute.
All that the man then says, is starting a new dispute. ;)