Besides, we may easily observe, that in all those arguments there is an evident reasoning in a circle. A person who takes possession of another’s goods, and uses them as his own, in a manner declares them to be his own; and this falsehood is the source of the immorality of injustice. But is property, or right, or obligation, intelligible, without an antecedent morality?
A man that is ungrateful to his benefactor, in a manner affirms, that he never received any favours from him. But in what manner? Is it because it is his duty to be grateful? But this supposes, that there is some antecedent rule of duty and morals. Is it because human nature is generally grateful, and makes us conclude, that a man who does any harm never received any favour from the person he harmed? But human nature is not so generally grateful, as to justify such a conclusion. Or if it were, is an exception to a general rule in every case criminal, for no other reason than because it is an exception?
But what may suffice entirely to destroy this whimsical system is, that it leaves us under the same difficulty to give a reason why truth is virtuous and falsehood vicious, as to account for the merit or turpitude of any other action. I shall allow, if you please, that all immorality is derived from this supposed falsehood in action, provided you can give me any plausible reason, why such a falsehood is immoral. If you consider rightly of the matter, you will find yourself in the same difficulty as at the beginning.
This last argument is very conclusive; because, if there be not an evident merit or turpitude annexed to this species of truth or falsehood, it can never have any influence upon our actions. For, who ever thought of forbearing any action, because others might possibly draw false conclusions from it? Or, who ever performed any, that he might give rise to true conclusions? ↩
As a proof, how confused our way of thinking on this subject commonly is, we may observe, that those who assert, that morality is demonstrable, do not say, that morality lies in the relations, and that the relations are distinguishable by reason. They only say, that reason can discover such an action, in such relations, to be virtuous, and such another vicious. It seems they thought it sufficient, if they could bring the word, Relation, into the proposition, without troubling themselves whether it was to the purpose or not. But here, I think, is plain argument. Demonstrative reason discovers only relations. But that reason, according to this hypothesis, discovers also vice and virtue. These moral qualities, therefore, must be relations. When we blame any action, in any situation, the whole complicated object, of action and situation, must form certain relations, wherein the essence of vice consists. This hypothesis is not otherwise intelligible. For what does reason discover, when it pronounces any action vicious? Does it discover a relation or a matter of fact? These questions are decisive, and must not be eluded. ↩
In the following discourse natural is also opposed sometimes to civil, sometimes to moral. The opposition will always discover the sense, in which it is taken. ↩
No questions in philosophy are more difficult, than when a number of causes present themselves for the same phenomenon, to determine which is the principal and predominant. There seldom is any very precise argument to fix our choice, and men must be contented to be guided by a kind of taste or fancy, arising from analogy, and a comparison of familiar instances. Thus, in the present case, there are, no doubt, motives of public interest for most of the rules, which determine property; but still I suspect, that these rules are principally fixed by the imagination, or the more frivolous properties of our thought and conception. I shall continue to explain these causes, leaving it to the reader’s choice, whether he will prefer those derived from public utility, or those derived from the imagination. We shall begin with the right of the present possessor.
It is a quality, which I have already observed in human nature [Book I, Part IV, sect. 5], that when two objects appear in a close relation to each other, the mind is apt to ascribe to them any additional relation, in order to complete the union; and this inclination is so strong, as often to make us run into errors (such as that of the conjunction of thought and matter) if we find that they can serve to that purpose. Many of our impressions are incapable of place or local position; and yet those very impressions we suppose to have a local conjunction with the impressions of sight and touch, merely because they are conjoined by causation, and are already united in the imagination. Since, therefore, we can feign a new relation, and even an absurd one, in order to complete any union, it will easily be imagined, that if there be any relations, which depend on the mind, it will readily conjoin them to any preceding relation, and unite, by a new bond, such objects as have already an union in the fancy. Thus for instance, we never fail, in our arrangement of bodies, to place those which are resembling in contiguity to each other, or at least in correspondent points of view; because we feel a satisfaction in joining the relation of contiguity to that of resemblance, or the resemblance of situation to that of qualities. And this is easily accounted for from the known properties of human nature. When the mind is determined to join certain objects, but undetermined in its choice of the particular objects, it naturally turns its eye to such as are related together. They are already united in the mind: They present themselves at the same time to the conception; and instead of requiring any new reason
