anew those unjust passions which had formerly misled us; we endeavour by artifice to awaken our old hatreds, and irritate afresh our almost forgotten resentments: we even exert ourselves for this miserable purpose, and thus persevere in injustice, merely because we once were unjust, and because we are ashamed and afraid to see that we were so. {139} So partial are the views of mankind with regard to the propriety of their own conduct, both at the time of action and after it; and so difficult is it for them to view it in the light in which any indifferent spectator would consider it. But if it was by a peculiar faculty, such as the moral sense is supposed to be, that they judged of their own conduct, if they were endued with a particular power of perception which distinguished the beauty or deformity of passions and affections; as then passions would be more immediately exposed to the view of this faculty, it would judge more accurately concerning them, than concerning those of other men, of which it had only a more distant prospect. This self-deceit, this fatal weakness of mankind, is the source of half the disorders of human life. If we saw ourselves in the light in which others see us, or in which they would see us if they knew all, a reformation would generally be unavoidable. We could not otherwise endure the sight exposed to us. Nature, however, has not left this weakness, which is of so much importance, altogether without a remedy; nor has she abandoned us entirely to the delusions of self-love. Our continual observations upon the conduct of others, insensibly lead us to form to ourselves certain general rules concerning what is fit and proper either to be done or to be avoided. Some of their actions shock all our natural sentiments. We hear every body about us express the like detestation against them. This still further confirms, and even exasperates our natural sense of their deformity. It satisfies us that we view them in the proper light, when we see other people view them in the same light. We resolve never to be guilty of the like, nor ever, upon any account, to render ourselves in this manner the objects of universal disapprobation. We thus naturally lay down to ourselves a general rule, that all such actions are to be avoided, as tending to render us odious, contemptible, or punishable, the objects of all those sentiments for which we have the greatest dread and aversion. Other actions, on the contrary, call forth our approbation, and we hear every body around us express the same favourable opinion concerning them. Every body is eager to honour and reward them. They excite all those sentiments for which we have by nature the strongest desire; the love, the gratitude, the admiration of mankind. We become ambitious of performing the like; and thus naturally lay down to ourselves a rule of another kind, that every opportunity of acting in this manner is to be sought after.