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114 societies exchanging, and the agent or agents of exchange; the value of the things to be exchanged is known by both the exchangers, and each receives equal value, neither gaining nor losing (for whatever one gains the other loses). The intermediate agent is paid a known per-centage by both, partly for labour in conveyance, partly for care, knowledge, and risk; every attempt at concealment of the amount of the pay indicates either effort on the part of the agent to obtain unjust profit, or effort on the part of the exchangers to refuse him just pay. But for the most part it is the first, namely the effort on the part of the merchant to obtain larger profit (so- called) by buying cheap and selling dear. Some part, indeed, of this larger gain is deserved, and might be openly demanded, because it is the reward of the merchant's knowledge, and foresight of probable necessity; but the greater part of such gain is unjust; and unjust in this most fatal way, that it depends, first, on keeping the exchangers ignorant of the exchange value of the articles; and, secondly, on taking advantage of the buyer's need and the seller's poverty. It is,