For example, suppose an active peasant, having got his ground into good order and built himself a comfortable house, finding still time on his hands, sees one of his neighbours little able to work, and ill lodged, and offers to build him also a house, and to put his land in order, on condition of receiving for a given period rent for the building and tithe of the fruits. The offer is accepted, and a document given promissory of rent and tithe. This note is money. It can only be good money if the man who has incurred the debt so far recovers his strength as to be able to take advantage of the help he has received, and meet the demand of the note; if he lets his house fall to ruin, and his field to waste, his promissory note will soon be valueless: but the existence of the note at all is a consequence of his not having worked so stoutly as the other. Let him gain as much as to be able to pay back the entire debt; the note is cancelled and we have two rich store-holders and no currency.