Because Girls require time and money
We can say : Girls=Time * Money
and because Time is Money (Time=Money)
　　　　　　　　　　　　　　 　　　2
Girls = Money * Money = (Money)
And because "Money is the root of all evil" 　 ______
Money=±√Evil
So
　 _____ 2
Girls = (±√Evil) = Evil