afterwards arise, and pursue it as a part of our happiness, when once it is constituted such by our original affections. Were there no appetite of any kind antecedent to self-love, that propensity could scarcely ever exert itself; because we should, in that case, have felt few and slender pains or pleasures, and have little misery or happiness to avoid or to pursue. Now where is the difficulty in conceiving, that this may likewise be the case with benevolence and friendship, and that, from the original frame of our temper, we may feel a desire of another's happiness or good, which, by means of that affection, becomes our own good, and is afterwards pursued, from the combined motives of benevolence and self-enjoyments? Who sees not that vengeance, from the force alone of passion, may be so eagerly pursued, as to make us knowingly neglect every consideration of ease, interest, or safety; and, like some vindictive animals, infuse our very souls into the wounds we give an enemy; [Footnote: Animasque in vulnere ponunt. VIRG, Dum alteri noceat, sui negligens says Seneca of Anger. De Ira, I. i.] and what a malignant philosophy must it be, that will not allow to humanity and friendship the same privileges which are undisputably granted to the darker passions of enmity and resentment; such a philosophy is more like a satyr than a true delineation or description of human nature; and may be a good foundation for paradoxical wit and raillery, but is a very bad one for any serious argument or reasoning. APPENDIX III. SOME FARTHER CONSIDERATIONS WITH REGARD TO JUSTICE. The intention of this Appendix is to give some more particular explication of the origin and nature of Justice, and to mark some differences between it and the other virtues.