Direct. VI. Therefore have a special regard to the laws of the country where you live; both as to your trade itself, and as to the price of what you sell or buy. For the law is made for the public benefit, which is to be preferred before any private man's. And when the law doth directly or indirectly set rates upon labours or commodities, ordinarily they must be observed; or else you will commit two sins at once, injury and disobedience.
Direct. VII. Also have special respect to the common estimate, and to the market price. Though it be not always to be our rule, yet ordinarily it must be a considerable part of it, and of great regard.
Direct. VIII. Let not imprudent thinking make you seem more covetous than you are. Some imprudent persons cannot tell how to make their markets without so many words, even about a penny or a trifle, that it maketh others think them covetous, when it is rather want of wit. The appearance of evil must be avoided. I know some that are ready to give a pound to a charitable use at a word, who will yet use so many words for a penny in their bargaining as maketh them deeply censured and misunderstood. If you see cause to break for a penny or a small matter, do it more handsomely in fewer words, and be gone: and do not tempt the seller to multiply words, because you do so.
Direct. IX. Have no more to do in bargaining with others, especially with censorious persons, than you needs must; for in much dealing usually there will be much misunderstanding, offence, censure, and complaint.
Direct. X. In doubtful cases, when you are uncertain what is lawful, choose that side which is safest to the peace of your consciences hereafter; though it be against your commodity, and may prove the losing of your right.
Tit. 2. Cases of Conscience about Justice in Contracts.
Quest. I. Must I always do as I would be done by? Or hath this rule any exceptions?
Answ. The rule intendeth no more but that your just self-denial and love to others, be duly exercised in your dealings with all. And, 1. It supposeth that your own will or desires be honest and just, and that God's law be their rule. For a sinful will may not be made the rule of your own actions or of other men's. He that would have another make him drunk, may not therefore make another drunk: and he that would abuse another man's wife, may not therefore desire that another man would lust after or abuse his wife. He that would not be instructed, reproved, or reformed, may not therefore forbear the instructing or reproving others. And he that would kill himself, may not therefore kill another. But he that would have no hurt done to himself injuriously, should do none to others: and he that would have others do him good, should be as willing to do good to them.
2. It supposeth that the matter be to be varied according to your various conditions. A parent that justly desireth his child to obey him, is not bound therefore to obey his child; nor the prince to obey his subjects; nor the master to do all the work for his servants, which he would have his servants do for him. But you must deal by another as you would (regularly) have them deal by you, if you were in their case, and they in yours. And on these terms it is a rule of righteousness.
Quest. II. Is a son bound by the contract which his parents or guardians made for him in his infancy?