(b) Extrinsically, or in respect to purpose, mode, and result, lies are of many kinds. As to mode, a lie is either spoken or acted, the former being a falsehood and the latter a simulation or hypocrisy. As to its immediate purpose, a lie is meant either to express falsehood only or to deceive, the former being misrepresentation and the latter deceit (e.g., if Claudius knows that he calumniated and that Sempronius heard the calumny, and yet brazenly denies the calumny to Sempronius, there is misrepresentation); if Claudius tries to mislead others who only suspect him and gives false alibis, there is deceit. As to its ulterior purpose, a lie is meant for good (an officious or jocose lie) or for evil (a pernicious lie), or is directed to both good and evil. As to its result, a lie sometimes produces and sometimes does not produce a statement at variance with fact; it sometimes deceives and sometimes does not deceive the auditors.
2392. Classification of Lies.—Every lie is harmful from its nature, since it tends to deceive others and so to disturb the good order of society. But the reason that moves persons to lie is not always evil, and hence we have the following classes of lies.
(a) Some lies are told for a good purpose, as when one lies in order to please (jocose lie) or to serve another (officious lie). Jocose lies include all kinds of humorous and interesting narrations and descriptions meant only to afford pleasure, but given out as facts by one who does not believe them to be facts. Untruths told in such a way (e.g., with a laugh or in a playful tone, especially if the auditors have a sense of humor) that it is clear they are not meant to be taken seriously, are not jocose lies or lies of any kind. Officious lies are told with a view to assisting or accommodating a neighbor, that he may receive some good (e.g., to hold out false promises as an inducement to good conduct) or escape some evil (e.g., to fill the ears of a despondent man with false reports of good news in order to revive his spirits). It seems that we should regard as officious lies various statements made by Jacob (Gen., xxvii. 35), David (I Kings, xx. 6, xxi. 2, xxvii. 10), and Judith (X. xi. xii).
(b) Some lies are told for an evil purpose, as when one lies merely to indulge a propensity for falsehood or for the sheer pleasure of lying (lies of inclination), or when one lies to injure another person (pernicious lies).
2393. Motives for Lying.—The motives for lying are not always simple, and it may happen that in one and the same lie there are several motives of different character.
(a) Thus, an officious lie is not always dictated by pure benevolence. It may be selfish (e.g., when one lies to conceal the delinquency of another in which one was involved), as well as altruistic (e.g., when the liar derives no benefit from the lie), or self-sacrificing (e.g., when the liar is put to expense, trouble or loss through his lie).
(b) An officious lie may also be pernicious and jocose, for it may affect different persons in different ways. Thus, if Claudius calumniates Julius in order to shield Balbus from the bad opinion of Caius, who does not know Balbus, and to amuse Sempronius who knows the truth, the lie is pernicious as regards Julius, officious as regards Balbus, and jocose as regards Sempronius.
2394. Comparison of the Gravity of Various Lies.—(a) Lies of exaggeration are not worse as lies than lies of suppression, for in both cases the truth is departed from. But it is more imprudent to overstate than to understate, and in this sense the lie of exaggeration is worse.
(b) Lies are aggravated by the purpose to harm, and the greater the harm, the greater the sin. Thus, the worst of all pernicious lies is that which is directed against God, as in false religious doctrine; and the lie that harms a man in spiritual goods is worse than a lie that harms in temporal things only.
(c) Lies are mitigated by the purpose to help, and the greater the good intended the less the sin. In other words, lies that are not pernicious are not so bad as pernicious lies, officious lies are less sinful than jocose lies, officious lies told for the sake of some great good are not so grave as those told for the sake of a lesser good. Thus, it is a less evil to lie in order to save a man’s life than to lie in order to take his life; it is less sinful to lie in order to spare another the shock of bad news than to lie for the sake of embellishing a tale; it is a less offense to lie in order to ward off a bodily harm than to lie in order to prevent a financial loss.