The liar, and only the liar, is invariably and universally despised, abandoned, and disowned:  he has no domestick consolations, which he can oppose to the censure of mankind; he can retire to no fraternity, where his crimes may stand in the place of virtues; but is given up to the hisses of the multitude, without friend and without apologist.  It is the peculiar condition of falsehood, to be equally detested by the good and bad:  “The devils,” says Sir Thomas Brown, “do not tell lies to one another; for truth is necessary to all societies:  nor can the society of hell subsist without it.”

It is natural to expect, that a crime thus generally detested should be generally avoided; at least, that none should expose himself to unabated and unpitied infamy, without an adequate temptation; and that to guilt so easily detected, and so severely punished, an adequate temptation would not readily be found.

Yet so it is, that in defiance of censure and contempt, truth is frequently violated; and scarcely the most vigilant and unremitted circumspection will secure him that mixes with mankind, from being hourly deceived by men of whom it can scarcely be imagined, that they mean any injury to him or profit to themselves:  even where the subject of conversation could not have been expected to put the passions in motion, or to have excited either hope or fear, or zeal or malignity, sufficient to induce any man to put his reputation in hazard, however little he might value it, or to overpower the love of truth, however weak might be its influence.

The casuists have very diligently distinguished lies into their several classes, according to their various degrees of malignity:  but they have, I think, generally omitted that which is most common, and perhaps, not least mischievous; which, since the moralists have not given it a name, I shall distinguish as the lie of vanity.

To vanity may justly be imputed most of the falsehoods which every man perceives hourly playing upon his ear, and, perhaps, most of those that are propagated with success.  To the lie of commerce, and the lie of malice, the motive is so apparent, that they are seldom negligently or implicitly received; suspicion is always watchful over the practices of interest; and whatever the hope of gain, or desire of mischief, can prompt one man to assert, another is by reasons equally cogent incited to refute.  But vanity pleases herself with such slight gratifications, and looks forward to pleasure so remotely consequential, that her practices raise no alarm, and her stratagems are not easily discovered.

Vanity is, indeed, often suffered to pass unpursued by suspicion, because he that would watch her motions, can never be at rest:  fraud and malice are bounded in their influence; some opportunity of time and place is necessary to their agency; but scarce any man is abstracted one moment from his vanity; and he, to whom truth affords no gratifications, is generally inclined to seek them in falsehoods.