Philosophy of Law and the Conflict of Laws


In the late nineteenth and early twentieth centuries in the United States, work in what would now be called the philosophy of law took the form of theory in the conflict of laws. American philosophers of law as diverse as Wesley Newcomb Hohfeld, the American legal realists, and Ronald Dworkin all started out working on the field. Indeed, American legal realism began as an attack on Joseph Henry Beale's vested rights theory of choice of law. Since the advent of professionalized philosophy of law, however, the relationship between the conflict of laws and the philosophy of law have been criminally neglected. With Roxana Banu and Ralf Michaels, I have edited the following volume, in the attempt to encourage work on the intersection between the two fields:


The Philosophical Foundations of Private International Law (edited, with Ralf Michaels and Roxana Banu) (Oxford University Press, 2024)


Unlike other works in the "philosophical foundations" series, this volume is not a recapitulation of a large body of preexisting work. It is instead a collection of first attempts at connecting philosophy and conflicts.


There is so much to be done on the intersection between philosophy and conflicts that I plan on working on the topic for the rest of my productive life. I have written on how interest analysis - the predominant choice-of-law method in the United States - is incompatible with law's claim to authority. And I have written on Kelsen's doctrine of the unity of law from a conflicts perspective. In addition, in the following two pieces I have argued that principles of prescriptive and adjudicative jurisdiction are reasons to believe that legal monism - the view that necessarily one, and only one, legal system exists - is correct. To my knowledge, I am the only avowed legal monist among current Anglophone philosophers of law.


Legal Monism: An American History, in Christoph Bezemek, Michael Potacs and Alexander Somek (eds.), Vienna Lectures on Legal Philosophy 23-48 (Hart Publishing 2018)

In this paper, I argue that American conflicts scholars and jurists in the late-nineteenth and early twentieth century were committed to legal monism.



Jurisdiction and the Moral Impact Theory of Law, 29 Legal Theory 29-62 (2023)

In this article I use our commitment to principles of jurisdiction
to argue for legal monism. Although this legal monism might be Kelsenian (in the sense that law is independent of both social and moral facts), here I offer principles of jurisdiction as a reason to think that the moral impact theory of law, of the sort offered by Mark Greenberg, is correct.



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