In "Morals by Agreement", David Gauthier attempts to derive property rights from a moral principle called the Lockean proviso. The derivation fails, and the true implications of the moral principles which Gauthier invokes are quite different. These principles imply that persons have extensive liberties to use physical materials, but relatively few rights against interference by others in this use. Robert Nozick argues for an extensive system of property rights in "Anarchy, State, and Utopia"; his argument fails for similar reasons.

My aim in this essay is to explore the nature and force of “original-acquisition” justifications of private property. By “original-acquisition” justifications, I mean those arguments which purport to establish or importantly contribute to the moral defense of private property by: offering a moral/historical account of how legitimate private property rights for persons first arose ; offering a hypothetical or conjectural account of how justified private property could arise from a propertyless condition; or simply defending an account of how an individual (...) can make private property in some previously unowned thing . The “original acquisition” to which such justifications centrally refer, then, may be either the first instance of legitimate private property in human history , or only the first legitimate acquisition of some particular thing . But in either case, the justification will involve or entail the defense of one or more moral principles specifying how unowned things can become privately owned — that is, the defense of the kind of principles Robert Nozick has called “principles of justice in acquisition.”. (shrink)