Angelina so somehow i learnt it differently during my studies
Maybe what you learned is this:
To turn your girlfriend into a wife, you need to invest a lot of time and money into the relationship. So a wife is the product of time and money:
Wife = Time * Money
But we all know that time is money, so
Wife = Money * Money = Money2
Since money is the root of all evil,
Wife = sqrt(Evil)2 = Evil