Libertarianism holds that agents initially fully own themselves and have moral powers to acquire property rights in external things under certain conditions. It is normally advocated as a theory of justice in the sense of the duties that we owe each other. So understood, it is silent about any impersonal duties (i.e., duties owed to no one) that we may have.

This paper offers a conditional defence of a minimalist theory of appropriation. The conclusion of its main argument is that, if people do enjoy a natural right to appropriate unappropriated resources, then that right is best understood as a derivative right that stems from a more fundamental natural right to self-preservation. If this conclusion is correct, then insofar as people have a natural right to appropriation, it is much more limited than it is usually assumed, as the minimalist theory places (...) very stringent restrictions on both the amount of unappropriated resources each person has a right to appropriate and the use they can make of those appropriated resources. The conclusion of my argument can be either used as a premise in a modus tollens argument to be used against natural-right theories of property rights or as a premise in a modus ponens argument in favour of a broadly left-libertarian theory. (shrink)

This article considers the question of why labor income may be permissibly redistributed to the poor even though non-essential body parts should generally be protected from redistribution to the infirm – the body-income puzzle. It argues that proposed solutions that affirm self-ownership but reject ownership of labor income are unsuccessful. And proposed solutions that grant individuals entitlements to resources based on the centrality of those resources to the individual’s personal identity are also unsuccessful. Instead, this article defends a solution to (...) the body-income puzzle based on a novel conception of respect for the separateness of persons. This conception holds that the sphere of moral authority protected from interference by respect for the separateness of persons includes both the body and labor income. And the strength of the negative rights constituting this sphere vary based on these rights' importance to the personal identity of the right-holder. It is shown that a commitment to helping the disadvantaged tempered by this conception of respect for the separateness of persons can solve the body-income puzzle. (shrink)

Many libertarians ground their theory of justice in a non-aggression principle. The NAP is often the basis for the libertarian condemnation of state action – that it is necessarily aggressive and therefore unjust. This approach is often criticised insofar as it defines aggression, in part, as the violation of legitimate property rights, and is therefore parasitical upon a prior – and unjustified – theory of property. While it is true that libertarians who defend the NAP sometimes fail to give a (...) satisfactory account of its relationship to libertarian property rights, such an account is in fact available. A commitment to property rights and to non-aggression can both be grounded in a commitment to non-interference. Such a principle, then, brings together the NAP and the theory of property it is parasitical upon, thus saving the unity and austerity of the overall approach. (shrink)

This article argues that teachers of environmental ethics must more aggressively entertain questions of private property in their work and in their teaching. To make this case, it first introduces the three primary positions on property: occupation arguments, labor theory of value arguments, and efficiency arguments. It then contextualizes these arguments in light of the contemporary U.S. wise-use movement, in an attempt to make sense of the concerns that motivate wise-use activists, and also to demonstrate how intrinsic value arguments miss (...) the mark. Finally, it offers some suggestions about further directions for environmental ethics, reasoning that there is a good deal of headway to be gained for environmental ethics by accepting that nature can be owned as property, but nevertheless engaging the idea of private property critically. (shrink)

The self-ownership thesis asserts, roughly, that agents own their minds and bodies in the same way that they can own extra-personal property. One common strategy for defending the self-ownership thesis is to show that it accords with our intuitions about the wrongness of various acts involving the expropriation of body parts. We challenge this line of defense. We argue that disgust explains our resistance to these sorts of cases and present results from an original psychological experiment in support of this (...) hypothesis. We argue further that learning that disgust is responsible for pro-self-ownership intuitions should reduce our confidence in those intuitions. After considering and rejecting some prominent “debunking” arguments predicated on disgust’s evolutionary history, we provide alternative reasons for thinking that disgust is not a reliable source of moral judgments. Rejecting the reliability of disgust as a mechanism for producing moral beliefs coheres with our considered judgments about the general kinds of considerations that are morally relevant and a range of particular moral problems. (shrink)

As the sciences of biotechnology, synthetic biology, and nanotechnology develop, questions about liability for harms caused by self-replicating inventions will arise increasingly often. Although negligence, nuisance, and other torts may be relevant in such circumstances, trespass may be the more appropriate cause of action. First, the author explores doctrinal hurdles facing plaintiffs alleging biotrespass. To overcome concerns about the metaphysicality of molecular biotrespass, the author draws analogies to “cybertrespass.” To confront the problem of suing patent licensors for the actions of (...) their licensees, the author makes reference to principles of landlord-tenant law. Well-established laws concerning wandering animals shed light on the policies underlying biotrespass. In the second part, the author examines such policies in further detail and considers the purpose of transporting property metaphors into bio/nanospace. The article concludes that biotrespass can be a viable cause of action, if crafted carefully and understood properly. (shrink)