If there were no scarcity in the world, human conflicts or more precisely physical clashes would be impossible. Interpersonal conflicts are always conflicts concerning scarce things. I want to do A with a given thing and you want to do B with the same thing. Because of such conflicts--and because we are able to communicate and argue with each other--we seek out norms of behaviour with the purpose of avoiding these conflicts. The purpose of norms is conflict-avoidance. If we did not want to avoid conflicts, the search for norms of conduct would be senseless. We would simply fight and struggle.
Absent a perfect harmony of all interests, conflicts regarding scarce resources can only be avoided if all scarce resources are assigned as private, exclusive property to some specified individual or group of individuals. Only then can I act independently, with my own things, from you, with your own things, without you and me clashing.
But who owns what scarce resource as his private property and who does not? First: Each person owns his physical body that only he and no one else controls directly. And second, as for scarce resources that can be controlled only indirectly (that must be appropriated with our own nature- given, i.e., unappropriated, body): Exclusive control (property) is acquired by and assigned to that person who appropriated the resource in question first or who acquired it through voluntary (conflict-free) exchange from its previous owner. For only the first appropriator of a resource (and all later owners connected to him through a chain of voluntary exchanges) can possibly acquire and gain control over it without conflict, i.e., peacefully. Otherwise, if exclusive control is assigned instead to latecomers, conflict is not avoided but contrary to the very purpose of norms made unavoidable and permanent.
If you want to live in peace with other people and avoid all physical clashes and, if such clashes do occur, seek to resolve them peacefully, then you must be an anarchist or more precisely a private property anarchist, an anarcho-capitalist, or a proponent of a private law society.
Hans Herman Hoppe