Fine, money is loaned to a bank, and they have an obligation to repay the loan. With what does said bank repay the loan? Money, of course. Where does that money

Fine, money is loaned to a bank, and they have an obligation to repay the loan. With what does said bank repay the loan? Money, of course. Where does that money come from? Ultimately: other loans. "It's loans all the way down..."