Enquiry Concerning Political Justice
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第55章

But it will be alleged, "Human pursuits are often of a continued tenour, made up of a series of actions, each of which is adopted, not for its own sake, but for the sake of some conclusion in which it terminates. Many of these depend for their success upon co-operation and concert. It is therefore necessary that I should have some clear and specific reason to depend upon the fidelity of my coadjutor, that so I may not be in danger, when I have for a length of time persisted in my exertions, of being frustrated by some change that his sentiments have undergone in the interval." To this it may be replied that such a pledge of fidelity is less frequently necessary than is ordinarily imagined. Were it to be superseded in a variety of cases, men would be taught to have more regard to their own exertions, and less to the assistance of others, which caprice may refuse, or justice oblige them to withhold. They would acquire such merit as should oblige every honest man, if needful, to hasten to their succour; and engage in such pursuits as, not depending upon the momentary caprice of individuals, rested for their success upon the less precarious nature of general circumstances.

Having specified the various limitations that exist as to the utility of promises, it remains for us to discuss their form and obligation in the cases where they may be conceived to be necessary.

Promises are of two kinds, perfect and imperfect. A perfect promise is where the declaration of intention is made by me, for the express purpose of serving as a ground of expectation to my neighbour respecting my future conduct. An imperfect promise is where it actually thus serves as a ground of expectation, though that was not my purpose when I made the declaration.

Imperfect promises are of two classes: I may have reason, or I may have no reason, to know, when I make the declaration, that it will be acted upon by my neighbour, though not assuming the specific form of an engagement.

As to imperfect promises it may be observed that they are wholly unavoidable.

No man can always refrain from declaring his intention as to his future conduct. Nay, it should seem that, in many cases, if a man enquire of me the state of my mind in this respect, duty obliges me to inform him of this as I would of any other fact. Were it otherwise, a perpetual coldness and reserve would pervade all human intercourse. But the improvement of mankind rests upon nothing so essentially as upon the habitual practice of candour, frankness and sincerity.

Perfect promises will also in various instances occur. I have occasion for an interview with a particular person, tomorrow. I inform him of my intention of being upon a certain spot at a given hour of the day. It is convenient to him to go to the same place at the same time, for the purpose of meeting me. In this case, it is impossible to prevent the mutual declaration of intention from serving as a sort of pledge of the performance. Qualifying expressions will make little alteration: the ordinary circumstances which qualify engagements will in most cases be understood, whether they are stated or no. Appointments of this sort, so far from deserving to be uniformly avoided, ought in many cases to be sought, that there may be as little waste of time or exertion on either side as the nature of the situation will admit.

To proceed from the manner in which engagements are made to the obligation that results from them. This obligation is of different degrees according to the nature of the case; but it is impossible to deny that it may be of the most serious import. We have already seen that each man is entitled to his sphere of discretion, which another may not, unless under the most imperious circumstances, infringe. But I infringe it as substantially by leading him into a certain species of conduct through the means of delusive expectations, as by any system of usurpation it is possible to employ.

A person promises me, I will suppose, five hundred pounds for a certain commodity, a book it may be, which I am to manufacture. I am obliged to spend several months in the production. Surely, after this, he can rarely be justified in disappointing me, and saying I have found a better object upon which to employ my money. The case is nearly similar to that of the labourer who, after having performed his day's work, should be refused his wages. Take the case the other way, and suppose that, I having contracted to produce the commodity, the other party to the contract has advanced me three out of the five hundred pounds. Suppose further, that I am unable to replace this sum. Surely I am not at liberty to dispense myself from the performance of my engagement.

The case here is of the same nature as of any other species of property.

Property is sacred: there is but one way in which duty requires the possessor to dispose of it, but I may not forcibly interfere, and dispose of it in the best way in his stead. This is the ordinary law of property, as derived from the principles of universal morality. But there are cases that supersede this law. The principle that attributes to every man the disposal of his property, as well as that distributes to every man his sphere of discretion, derives its force in both instances from the consideration that a greater sum of happiness will result from its observance than its infringement. Wherever therefore the contrary to this is clearly the case, there the force of the principle is suspended. What shall prevent me from taking by force from my neighbour's store, if the alternative be that IChapter ust otherwise perish with hunger? What shall prevent me from supplying the distress of my neighbour from property that, strictly speaking, is not my own, if the emergence be terrible, and will not admit of delay?

Nothing; unless it be the punishment that is reserved for such conduct in some instances; since it is no more fitting that I should bring upon myself calamity and death than that I should suffer them to fall upon another.