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CHAPTER III.: CONSIDERATIONS RESPECTING THE EFFECTS OF INTEREST IN GENERAL UPON EVIDENCE. - Jeremy Bentham, The Works of Jeremy Bentham, vol. 6 [1843]

Edition used:

The Works of Jeremy Bentham, published under the Superintendence of his Executor, John Bowring (Edinburgh: William Tait, 1838-1843). 11 vols. Vol. 6.

Part of: The Works of Jeremy Bentham, 11 vols.

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CHAPTER III.

CONSIDERATIONS RESPECTING THE EFFECTS OF INTEREST IN GENERAL UPON EVIDENCE.

1. There is scarcely one occasion on which, scarcely a species of suit in which, it may not happen to a man to be acted upon at the same time by any number of motives, as above exhibited—by any number of different sorts of interests, besides the guardian motives, the force of which acts in general on the side of truth: and these sinister interests may be acting all of them on the same side, or some on one side, some on another.

2. The efficiency of a motive depends, not upon the species to which it belongs, but on the strength with which it happens to act in each individual instance. There is scarcely a species of motive which is not capable of acting with any degree of force, from the lowest to the highest, or not much short of the highest.

3. A man’s own testimony, given in his own cause, is of all evidence the most, and most properly, exposed to suspicion, where the tendency of it is in favour of that cause:—it is of all evidence the least exposed to suspicion, when the tendency of it is in disfavour of that cause.

4. But even in this case, it cannot be relied upon with perfect safety. In a penal case, a man may by his testimony subject himself to conviction and punishment as for a certain offence, in the hope of avoiding some greater evil; for example, prosecution, and thence conviction and punishment, for some more severely punishable offence. In a non-penal case, a man may, for the advantage of others, with or without collusion, institute a cause for the very purpose of betraying it.

5. Setting aside the indirect counter-evidence that may be opposed to a man’s testimony by the improbability of the fact he deposes to,—it is more easy to disbelieve him where, on the supposition of incorrectness on the part of his evidence, such falsity cannot but have been accompanied with that criminal consciousness which converts it into mendacity, than when it may be accounted for on the supposition of simple incorrectness:—because, in the first case, it cannot have happened but that the mind of the witness must have been subjected to the action of some sinister interest or interests, acting in sufficient force to overcome the united resistance of the whole phalanx of guardian interests.

6. In England, scarcely any crime is so common as that of exculpative perjury;—scarcely any so rare as that of criminative perjury:—especially in the case of the most highly punished species of crimes. The reason is, that in the former case, humanity, i. e. sympathy towards the individual over whose head the rod of punishment hangs suspended, is an interest that acts in opposition to the guardian interests:—in the latter case, its force is exerted on the other side.

7. Among professional depredators, the propensity to exculpative perjury is strengthened by the concurrence of other interests. Not only each gang of specially connected depredators, but the whole class, and, as it were, community of depredators taken together, form, as it were, a particular community of itself, which, like other particular communities, lawful and unlawful, honourable and dishonourable, such as that of divines, lawyers, merchants, &c. has its esprit de corps, its corporate affections, and other interests. Being a community within a community, it has accordingly a popular sanction, a public opinion of its own, distinct from, and in this instance opposed to, the public opinion of the great community, the public at large. This, therefore, is one of the cases in which the force of the popular sanction is divided against itself, and in which that division which is likely to be strongest is on the side opposed to justice.*

8. Among such professional depredators as are either connected and united into gangs by special compact and habits of co-operation, or though it be only by an acquaintance with the particulars of each other’s crimes, the propensity to exculpative perjury is still further strengthened by the influence of the principle of self-preservation. When a member of any such gang comes to be convicted, a natural and frequent result is a disclosure, more or less complete, of the particulars of his former delinquencies, including an indication of the share borne in them by his associates: among the fruits of which indications, is the apprehension of those associates, and the obtaining of evidence sufficient to bring them to punishment.

9. Against criminative perjury, so powerful, so efficacious, is the action of the guardian interests, that, in the character of seductive interests, two of the most powerful motives, viz. love of life, and pecuniary interest—one acting in the greatest possible force, the other acting with more than ordinary force—are scarcely ever known to produce it. Pardon, together with pecuniary reward in masses from £10 up to £1000, are the expedients continually resorted to, in English practice, for the obtaining from an accomplice the necessary mass of evidence, in the case of capital, that is, first-rate crimes. All this while, where self-preservation is out of the question, pecuniary interest, though in a magnitude ever so trifling, and though it be of that comparatively weaker sort which is created by the desire of gain, and not of that stronger sort which is created by the apprehension of loss, is under the same system made to operate as a ground of peremptory exclusion, preventing the testimony from being so much as heard:—and this, too, let the pecuniary interest at stake, and consequently the damage to the party suffering by the perjury, supposing it to take place, be ever so trifling. Pecuniary interest, acting upon the witness by itself, is thus made to shut the door against his testimony: pecuniary interest, when reinforced by another interest infinitely more powerful, acting on the same side,—by an interest which includes all others put together,—no longer shuts the door against, but throws it wide open to the same testimony. All the while, this apparently irresistible invitation to perjury has scarcely ever been productive of its natural, and to appearance unavoidable effect. The reason is nowhere to be found in the joint influence of the two concurring causes, but in the particular difficulty of carrying into effect a plan of perjury in this particular case—a cause which belongs not to the present purpose: the other is the joint influence of the interest of humanity, seconded and supported by a narrow and spurious sort of honour, or regard for a portion of the mass of popular opinion, as above explained. But the force of the action of a principle of humanity, in a case where the tendency of it is to cause one man to save another from a mass of suffering—from a mass of punishment—will naturally be, cæteris paribus, directly as the magnitude of that punishment. Hence, although the force of the motive acting in a sinister direction—viz. self-preservation—is also in this case, by the supposition, as the magnitude of that same punishment, yet such is the force of the principle of humanity, seconded as above, that it almost always gets the better of the sinister interest of the same kind, even when that sinister interest has the allied force of pecuniary interest for its support.

[* ]See Letters to Lord Pelham, and Collins on New South Wales.