20. Why, the very law of the Lord teaches us that this rule must be observed, so that we may never deprive another of anything for the sake of our own advantage. For it says: “Remove not the bounds which thy fathers have set.” It bids a neighbour’s ox to be brought back if found wandering. It orders a thief to be put to death. It forbids the labourer to be deprived of his hire, and orders money to be returned without usury. It is a mark of kindly feeling to help him who has nothing, but it is a sign of a hard nature to extort more than one has given. If a man has need of thy assistance because he has not enough of his own wherewith to repay a debt, is it not a wicked thing to demand under the guise of kindly feeling a larger sum from him who has not the means to pay off a less amount? Thou dost but free him from debt to another, to bring him under thy own hand; and thou callest that human kindliness which is but a further wickedness.