Alejandra Mancilla

John Locke’s justification of property rights starts with the idea that mixing one’s labor with previously unowned (natural) physical objects entitles one to ownership of the resulting product. American philosopher Robert Nozick presents this idea in Anarchy, State and Utopia (1974), but notes that things are not as straightforward as they might seem. On the contrary, Nozick writes, there are instances where by mixing one’s labor with something in nature, one loses one’s labor without making any gain: “If I own a can of tomato juice and spill it in the sea so that its molecules (made radioactive, so I can check this) mingle evenly throughout the sea, do I thereby come to own the sea, or have I foolishly dissipated my tomato juice?” The answer is obviously the latter, he argues; and he suggests that what Locke really had in mind was that what one ought to own is not the full resulting product of one’s labor, but rather the value added to the original product before the laboring took place. In this article, I claim that one of the most common arguments supporting patents over genetically modified organisms (GMOs) rests on the same misunderstanding. I present three possible defenses that might be given to support it, and show how they fail.

From the end of the twelfth century until the middle of the eighteenth century, the concept of a right of necessity –i.e. the moral prerogative of an agent, given certain conditions, to use or take someone else’s property in order to get out of his plight– was common among moral and political philosophers, who took it to be a valid exception to the standard moral and legal rules. In this essay, I analyze Samuel Pufendorf’s account of such a right, founded on the basic instinct of self-preservation and on the notion that, in civil society, we have certain minimal duties of humanity towards each other. I review Pufendorf’s secularized account of natural law, his conception of the civil state, and the function of private property. I then turn to his criticism of Grotius’s understanding of the right of necessity as a retreat to the pre-civil right of common use, and defend his account against some recent criticisms. Finally, I examine the conditions deemed necessary and jointly sufficient for this right to be claimable, and conclude by pointing to the main strengths of this account. Keywords: Samuel Pufendorf, Hugo Grotius, right of necessity, duty of humanity, private property.