"If the bank runs out of money, it may issue as much money on its own as it may need by merely writing on any ordinary paper" - The rules of monopoly, Parker Bros, Inc.
For some videos on how the monetary system works.
I like how when you leave money in a bank account the bank could literally create 10 times more money and loan it out at higher interest then they provide. And I mean I like it in a sarcastic way.