 Hume believes that nature has supplied us with many motives—parental love, benevolence, and generosity—that make it possible for us to live together peacefully in small societies based on kinship relations. One of his important insights is that nature has not provided us with all the motives we need to live together peacefully in large societies. After arguing in Treatise 3.2.1 that justice is artificial, in T 3.2.2, he asks two different questions: What motivates human beings to establish the rules of justice that give rise to property rights, and why do we approve of people who obey these rules of justice? The first question concerns justice as a practice constituted by its rules. The second concerns justice as a virtue, a person’s disposition to obey the rules of justice.