satisfaction of our wants and tastes. These useful things are exchanged for each other, according to the convenience of those to whom they belong. There are two forms in these transactions; one is called barter: in this case, a service is rendered for the sake of receiving an equivalent service immediately. In this form, transactions would be exceedingly limited. In order that they may be multiplied, and accomplished independently of time and space amongst persons unknown to each other, and by infinite fractions, an intermediate agent has been necessary,—this is cash. It gives occasion for exchange, which is nothing else but a complicated bargain. This is what has to be remarked and understood. Exchange decomposes itself into two bargains, into two actors, sale and purchase,—the reunion of which is needed to complete it. You sell a service, and receive a crown—then, with this crown, you buy a service. Then only is the bargain complete; it is not till then that your effort has been followed by a real satisfaction. Evidently you only work to satisfy the wants of others, that others may work to satisfy yours. So long as you have only the crown which has been given you for your work, you are only entitled to claim the work of another person. When you have done so, the economical evolution will be accomplished as far as you are concerned, since you will then only have obtained, by a real satisfaction, the true reward for your trouble. The idea of a bargain implies a service rendered, and a service received. Why should
