 However, when we come to justice, we look in vain for a passion that can supply motive power for us to act justly. If anything, our natural motives move us away from justice (T III.ii.II). Self-love requires “correcting and restraining” (T III.ii.I). And only a passion can do that. But which? Hume himself dismisses the possibilities of public or private beneficence or universal love. In the end he concludes that there is no natural passion to explain it. Instead, it is in a certain crucial sense artificial (T III.ii.VI). Under certain conditions, given that we are sensible of the advantages of living in human society, our self-love or self-interest may be given an “alteration of its direction,” and induce us to respect the rules of justice. These Hume thinks of primarily as involving honesty and “particular” property rules (T III.ii.II). That “alteration” needs explanation.