We have many debts to pay in our lives, debts we do not always know of. We only know our money debts, but there are many others: of the husband to his wife and of the wife to her husband; of the mother to the child and of the child to the mother; the debts to pay to our friends and acquaintances, to those who stand above us and to those who are dependent upon us. There are so many different kinds of debts we have to pay; and yet we never think about them.