Property, in James Q. Whitman’s arresting formulation, is not an economic institution but an ‘idiom of power’, a cultural form through which societies structure and legitimise domination. His book traces the long arc of this idiom from Roman law and its primitive antecedents in order to argue that the conceptual core of Western property lies not in labour or land, but in the capture and mastery of living beings. The thesis is radically simple and powerful, as well as deliberately unsettling.
W. contends that early ownership is grounded in predation: property arises from the act of taking (capere), not from cultivation or transformation. Ownership is thus fundamentally relational: a power over persons, later extended to things by abstraction. Roman law represents the first fully developed juridical articulation of this model. It does not invent domination, but systematises and formalises it into doctrine. The strength of the book lies in showing how deeply this model is embedded in Roman legal language. The paradigmatic claim of ownership — hunc hominem meum esse aio ex iure Quiritium — is not an accidental example, but a revealing one: the basic legal prototype of ownership is a human being, a slave. From this, the entire conceptual structure unfolds. Dominus is not merely an owner but a master; dominium becomes a general category only by abstraction from this primary relation. Within the household, slaves, children, animals and things form a continuum under a single authority. Ownership appears as a form of micro-sovereignty, and the language of property becomes a general language of authority.
W.’s reconstruction is particularly persuasive in his treatment of acquisition doctrines. The same logic governs the capture of animals, the enslavement of humans and even, by extension, cases such as specificatio. Ownership emerges as the stabilisation of a factum prehensionis, a successful act of taking. Violence is not external to ownership but internal to it: the master’s power over the slave, including the right to punish, is structurally embedded in the concept of ownership itself. Equally compelling is the broader thesis concerning transformation. Over centuries, the paradigmatic object of ownership shifts from persons to land, from mastery over living beings to control over territory. The doctrines remain, but their objects change: occupatio, once centred on captives, is reinterpreted in terms of terra nullius; sovereignty becomes territorial rather than personal. This shift, culminating in Locke and Blackstone in the early modern period, marks a profound reconfiguration of both property and political authority. W. insists that this is conceptual, not merely economic, reflecting a change in the symbolic order through which ownership is imagined.
The book’s greatest merit lies in forcing the reader to reconsider what property is: not a natural category, but a historically contingent construct inseparable from forms of domination. W.’s work thus stands as a powerful challenge to both Lockean labour theory and modern economic accounts of property. At the same time, several aspects of the argument invite further nuance. The emphasis on the slave as the paradigmatic object of ownership risks obscuring the internal architecture of Roman legal power. The subjection of slaves and children is governed by parallel yet distinct logics — dominica potestas and patria potestas, together with manus — coordinated under the organising principle of the sui iuris. More than dominium itself, it is this broader structure of coordinated and, at times, overlapping powers that constitutes the true legal reference point. Reducing the system to the master–slave paradigm risks flattening a more complex configuration.
Moreover, slaves and filii familias were not merely passive objects of domination, but were extensively employed in productive and entrepreneurial activities. The Roman economy relied on sophisticated mechanisms that structured their agency within commerce. At the same time, slaves, often highly valuable assets, were the object of sustained care and attention. These elements complicate the image of purely predatory domination. Nor should one overlook that, while ideologically presented as total, paternal and dominical power was not without juridical limits. The image of unlimited sovereignty — even within W.’s deliberately heightened conceptual frame — risks overstating the legal reality and understating the normative pressures that shaped the exercise of household power.
A similar need for precision arises in relation to procedural forms. The legis actio sacramento in rem is presented as ritualised combat expressing domination; yet it may more precisely be understood as the juridical overcoming of the duel, the transformation of physical conflict into regulated procedure. Rather than reproducing the logic of seizure, it marks its institutionalisation and containment. More generally, the book tends to understate the plurality of models already present within Roman legal development. The human paradigm of domination could, in certain contexts, be complemented or partially displaced by other constructions (most notably in praetorian remedies such as the actio Publiciana, where a more abstract and, in part, land-oriented conception of control begins to emerge). The evolution of Roman ownership is thus less unilinear than W. suggests. It is also worth recalling that the earliest forms of power, irrespective of terminology, do not sharply distinguish between persons, animals and things: an original unity of control precedes later conceptual differentiation. Finally, the identification of ownership with a form of sovereignty, while illuminating, requires caution. Extending the paternal or dominical model into a general theory of sovereignty risks obscuring both the historical limits of those powers and the distinct logic governing territorial authority.
These reservations do not diminish the achievement of the book. On the contrary, they testify to its richness and capacity to provoke reflection. W. has offered not a closed system, but a powerful interpretive framework — one that invites dialogue with the sources and with the long tradition of Romanist scholarship. The central insight remains compelling: Western legal history is marked by a profound shift from a world of masters of people to a world of lords of land. Yet the strength of this insight lies precisely in its capacity to generate questions rather than foreclose them. If ownership is indeed an idiom of power, the task that remains is to understand the full grammar of that idiom. W. has opened that inquiry with force and originality; completing it will require the kind of differentiated analysis his own framework makes possible.
To return to the opening polarity, the Roman experience suggests that domination and submission are not merely opposed terms, but structurally co-implicated moments within a single legal and cultural dispositif. Domination is never given in the abstract: it is always exercised through forms, roles and masks; and submission, far from being a purely passive condition, is itself inscribed within a network of statuses, functions and recognitions that render the legal stage intelligible. In this sense, the Roman persona, far from coinciding with the modern ‘subject of rights’, appears, in its antagonism with res, as a technique for organising the very grammar of power, a way of distributing positions within a shared world rather than attributing an essence to individuals.
Against this backdrop, the tensions identified by W. acquire their deepest meaning. For if, as he argues, Western property originates in the capture and mastery of living beings, the Roman materials also show that such mastery is never absolute in the sense of a pure and unmediated sovereignty. Rather, it is articulated, limited, and even transformed through the very structures of submission on which it depends. To rethink (Roman) ownership, then, does not mean reducing it to pure domination, but rather understanding how domination itself is produced, staged, and continuously renegotiated within a field of relations that includes, and at times unsettles, the very distinction between the pole of persons and that of things — where servi belong equally to both categories.
