David Hume

“ For a promise always regards some future time, and the will has an influence only on present actions. It follows, therefore, that since the act of the mind, which enters into a promise, and produces its obligation, is neither the resolving, desiring, nor willing any particular performance, it must necessarily be the willing of that obligation, which arises from the promise. ”

“ The act of the mind, exprest by a promise, is not a resolution to perform any thing: For that alone never imposes any obligation. Nor is it a desire of such a performance: For we may bind ourselves without such a desire, or even with an aversion, declar'd and avow'd. ”

“ But so much corruption is there among men, that, generally speaking, this becomes but a slender security; and as the benefactor is here suppos'd to bestow his favours with a view to self interest, this both takes off from the obligation, and sets an example of selfishness, which is the true mother of ingratitude. Were we, therefore, to follow the natural course of our passions and inclinations, we shou'd perform but few actions for the advantage of others, from disinterested views ”

“ This form of words constitutes what we call a promise, which is the sanction of the interested commerce of mankind. When a man says he promises any thing, he in effect expresses a resolution of performing it; and along with that, by making use of this form of words, subjects himself to the penalty of never being trusted again in case of failure. A resolution is the natural act of the mind, which promises express: But were there no more than a resolution in the case, promises wou'd only declare our former motives, and wou'd not create any new motive or obligation. ”

“ Afterwards a sentiment of morals concurs with interest, and becomes a new obligation upon mankind. This sentiment of morality, in the performance of promises, arises from the same principles as that in the abstinence from the property of others. Public interest, education, and the artifices of politicians, have the same effect in both cases. The difficulties, that occur to us, in supposing a moral obligation to attend promises, we either surmount or elude. For instance; the expression of a resolution is not commonly suppos'd to be obligatory ”

“ To will a new obligation, is to will a new relation of objects; and therefore, if this new relation of objects were form'd by the volition itself, we shou'd in effect will the volition; which is plainly absurd and impossible. ”

“ But tho' this self-interested commerce of men begins to take place, and to predominate in society, it does not entirely abolish the more generous and noble intercourse of friendship and good offices. I may still do services to such persons as I love, and am more particularly acquainted with, without any prospect of advantage ”

“ And indeed, did the success of their designs depend upon their success in correcting the selfishness and ingratitude of men, they wou'd never make any progress, unless aided by omnipotence, which is alone able to new-mould the human mind, and change its character in such fundamental articles. All they can pretend to, is, to give a new direction to those natural passions, and teach us that we can better satisfy our appetites in an oblique and artificial manner, than by their headlong and impetuous motion. ”

“ Now 'tis evident we have no motive leading us to the performance of promises, distinct from a sense of duty. If we thought, that promises had no moral obligation, we never shou'd feel any inclination to observe them. This is not the case with the natural virtues. Tho' there was no obligation to relieve the miserable, our humanity wou'd lead us to it; and when we omit that duty, the immorality of the omission arises from its being a proof, that we want the natural sentiments of humanity. ”

“ Morality is suppos'd to consist in relation. Every new imposition of morality, therefore, must arise from some new relation of objects; and consequently the will cou'd not produce immediately any change in morals, but cou'd have that effect only by producing a change upon the objects. But as the moral obligation of a promise is the pure effect of the will, without the least change in any part of the universe; it follows, that promises have no natural obligation. ”

“ Here then is the mutual commerce of good offices in a manner lost among mankind, and every one reduc'd to his own skill and industry for his well-being and subsistence. The invention of the law of nature, concerning the stability of possession, has already render'd men tolerable to each other ”

“ All these contradictions are easily accounted for, if the obligation of promises be merely a human invention for the convenience of society; but will never be explain'd, if it be something real and natural, arising from any action of the mind or body. ”

“ No action can be requir'd of us as our duty, unless there be implanted in human nature some actuating passion or motive, capable of producing the action. This motive cannot be the sense of duty. A sense of duty supposes an antecedent obligation: And where an action is not requir'd by any natural passion, it cannot be requir'd by any natural obligation ”

“ All of them, by concert, enter into a scheme of actions, calculated for common benefit, and agree to be true to their word; nor is there any thing requisite to form this concert or convention, but that every one have a sense of interest in the faithful fulfilling of engagements, and express that sense to other members of the society. This immediately causes that interest to operate upon them; and interest is the first obligation to the performance of promises. ”

“ Men being naturally selfish, or endow'd only with a confin'd generosity, they are not easily induc'd to perform any action for the interest of strangers, except with a view to some reciprocal advantage, which they had no hope of obtaining but by such a performance. Now as it frequently happens, that these mutual performances cannot be finish'd at the same instant, 'tis necessary, that one party be contented to remain in uncertainty, and depend upon the gratitude of the other for a return of kindness. ”

“ All this is the effect of the natural and inherent principles and passions of human nature; and as these passions and principles are in alterable, it may be thought, that our conduct, which depends on them, must be so too, and that twou'd be in vain, either for moralists or politicians, to tamper with us, or attempt to change the usual course of our actions, with a view to public interest. ”

“ But 'tis certain we can naturally no more change our own sentiments, than the motions of the heavens; nor by a single act of our will, that is, by a promise, render any action agreeable or disagreeable, moral or immoral; which, without that act, wou'd have produc'd contrary impressions, or have been endow'd with different qualities. It wou'd be absurd, therefore, to will any new obligation, that is, any new sentiment of pain or pleasure; nor is it possible, that men cou'd naturally fall into so gross an absurdity. ”

“ They are the conventions of men, which create a new motive, when experience has taught us, that human affairs wou'd be conducted much more for mutual advantage, were there certain symbols or signs instituted, by which we might give each other security of our conduct in any particular incident. ”

“ Tho' possession be stable, men may often reap but small advantage from it, while they are possess'd of a greater quantity of any species of goods than they have occasion for, and at the same time suffer by the want of others. ”

“ But tho' these mysteries be so far alike, 'tis very remarkable, that they differ widely in other particulars, and that this difference may be regarded as a strong proof of the difference of their origins. As the obligation of promises is an invention for the interest of society, 'tis warp'd into as many different forms as that interest requires, and even runs into direct contradictions, rather than lose sight of its object. ”

“ One cannot transfer the property of a particular house, twenty leagues distant; because the consent cannot be attended with delivery, which is a requisite circumstance. Neither can one transfer the property of ten bushels of corn, or five hogsheads of wine, by the mere expression and consent ”

“ After these signs are instituted, whoever uses them is immediately bound by his interest to execute his engagements, and must never expect to be trusted any more, if he refuse to perform what he promis'd. ”