One sophism by which men persuade themselves that they have those virtues which they really want, is formed by the substitution of single acts for habits. A miser who once relieved a friend from the danger of a prison, suffers his imagination to dwell for ever upon his own heroic generosity; he yields his heart up to indignation at those who are blind to merit, or insensible to misery, and who can please themselves with the enjoyment of that wealth, which they never permit others to partake. From any censures of the world, or reproaches of his conscience, he has an appeal to action and to knowledge: and though his whole life is a course of rapacity and avarice, he concludes himself to be tender and liberal, because he has once performed an act of liberality and tenderness. As a glass which magnifies objects by the approach of one end to the eye, lessens them by the application of the other, so vices are extenuated by the inversion of that fallacy, by which virtues are augmented. Those faults which we cannot conceal from our own notice, are considered, however frequent, not as habitual corruptions, or settled practices, but as casual failures, and single lapses. A man who has from year to year set his country to sale, either for the gratification of his ambition or resentment, confesses that the heat of party now and then betrays the severest virtue to measures that cannot be seriously defended. He that spends his days and nights in riot and debauchery, owns that his passions oftentimes overpower his resolutions. But each comforts himself that his faults are not without precedent, for the best and the wisest men have given way to the violence of sudden temptations. There are men who always confound the praise of goodness with the practice, and who believe themselves mild and moderate, charitable and faithful, because they have exerted their eloquence in commendation of mildness, fidelity, and other virtues. This is an errour almost universal among those that converse much with dependants, with such whose fear or interest disposes them to a seeming reverence for any declamation, however enthusiastic, and submission to any boast, however arrogant. Having none to recall their attention to their lives, they rate themselves by the goodness of their opinions, and forget how much more easily men may shew their virtue in their talk than in their actions. The tribe is likewise very numerous of those who regulate their lives, not by the standard of religion, but the measure of other men's virtue; who lull their own remorse with the remembrance of crimes more atrocious than their own, and seem to believe that they are not bad while another can be found worse[41].