_Direct._ I. See that your hearts have the two great principles of justice deeply and habitually innaturalized or radicated in them, viz. The true love of your neighbour, and the denial of yourself; which in one precept are called, The loving of your neighbour as yourself. For then you will be freed from the inclination to injuries and fraud, and from the power of those temptations which carry men to these sins. They will be contrary to your habitual will or inclination; and you will be more studious to help your neighbour, than to get from him. _Direct._ II. Yet do not content yourself with these habits, but be sure to call them up to act, whenever you have any bargaining with others; and let a faithful conscience be to you as a cryer to proclaim God's law, and say to you, Now remember love and self-denial, and do as you would be done by. If Alexander Severus so highly valued this saying, _Quod tibi fieri non vis, alteri ne feceris_, as to make it his motto, and write and engrave it on his doors and buildings (having learned it of some christians or Jews, saith Lampridius); what a crime and shame is it for Christ's own professed disciples neither to learn nor love it! Put home the question when you have any bargaining with others, How would I be dealt with myself, if my case were the same with his? _Direct._ III. When the tempter draweth you to think only of your own commodity and gain, remember how much more you will lose by sin, than your gain can any way amount to. If Achan, Gehazi, Ahab, Judas, &c. had foreseen the end, and the greatness of their loss, it would have curbed their covetous desires. Believe God's word from the bottom of your heart, that you shall lose things eternal if you sinfully get things temporal, and then you will not make haste to such a bargain, to win the world and lose your souls. _Direct._ IV. Understand your neighbour's case aright, and meditate on his wants and interest. You think what you want yourself; but you think not whether his wants with whom you deal, may not be as great as yours: consider what his commodity costeth him; or what the toil of the workman's labour is; what house rent he hath to pay, and what a family to maintain; and whether all this can be well done upon the rates that you desire to trade with him. And do not believe every common report of his riches, or of the price of his commodity; for fame in such cases is frequently false. _Direct._ V. Regard the public good above your own commodity. It is not lawful to take up or keep up any oppressing monopoly or trade, which tendeth to enrich you by the loss of the commonwealth or of many.