Antonio Genovesi (1713–1769) was born in Castiglione near Salerno in the Kingdom of Naples into a minor noble family. He received his early education at the seminary of Salerno, where he studied logic, rhetoric, and Aristotelian ethics within the traditional studia humanitatis curriculum. Ordained a Catholic priest in 1737, he did not pursue a strictly scholastic or dogmatic theological career.

In 1738 Genovesi moved to Naples, where he began to critically analyse traditional learning while studying modern authors and developing works in metaphysics, logic, and ethics. His intellectual project developed in continuity with the intellectual programme of the Accademia degli Investiganti (1650–1683) and its Baconian orientation, which understood knowledge as grounded in experience and directed towards the study of human beings in their natural and civil contexts. The Investiganti had developed an anthropology underpinned by the recognition of the imperfection and limits of human knowledge, and the consequent finitude and vulnerability of human beings. Genovesi reformulated these premises within a broader philosophical programme and articulated an ethics of intellectual improvement directed towards human improvement through the expansion of knowledge in relation to the civil life.

The legacy of the Investiganti survived through intellectual networks in Naples after the dissolution of the academy, particularly through circles associated with the jurist Nicolò Caravita. Caravita gathered in his house jurists and scholars connected to the Investiganti milieu after the trial proceedings initiated by the Roman Inquisition against those accused of atomism and atheism. Among the participants were leading Neapolitan jurists associated with the jurisdictional tradition, who defended the libertas philosophandi and the ancient privileges and liberties of the city of Naples. These liberties, understood as forms of local self-government, were historically claimed by the Neapolitan political community and forcefully defended as in the 1647 revolt, which briefly proclaimed the Neapolitan Republic. Within this intellectual environment, the Investiganti legacy continued to circulate, and Genovesi later established intellectual relations with figures such as Celestino Galiani, Paolo Mattia Doria, and Giovan Battista Vico. They shared the intellectual orientation of the Neapolitan novatori, as the Investiganti styled themselves, characterised by a break with scholastic Aristotelianism, the defence of libertas philosophandi, and the adoption of empirical and experimental methods as directed toward public and civil ends.

In 1739 Genovesi founded a private school of philosophy and theology in Naples. The theology taught there was not-dogmatic and formed part of a rational and critical curriculum in which theology functioned as a preparatory discipline within a philosophical education directed toward civil action. Through this school Genovesi developed a pedagogy centred on judgement and practical reason, aimed at the improvement of civil life and the formation of citizens capable of participating in public life.

Between 1741 and 1745 Genovesi held provisional teaching appointments at the University of Naples, and in 1745 he was appointed to the chair of ethics with the support of Celestino Galiani. During this university period he composed and published a series of systematic works in Latin—later described as the “Latin cycle”—which articulated the conceptual progression of his philosophical project.

Within this cycle the successive works developed a trajectory linking general metaphysics, philosophical anthropology, natural theology, and natural law. The cycle culminated in 1752 with the publication of Principia legis naturalis et officiorum humanorum, which provided the normative articulation of the ontological, anthropological, and natural-theological premises. Within this trajectory, sociability was already grounded in human finitude and vulnerability (sociallitas) and articulated through the communicatio bonorum, understood as the exchange of goods of mind, body, and fortune as a structural condition of civil life. Natural law appears as the moment in which these philosophical premises are translated into the normative order of civil life.

In 1754 Genovesi was appointed to the newly created chair of Commercio e Meccanica at the University of Naples, later known as the chair of Civil Economy and generally considered the first chair of political economy in Italy. Funded by Bartolomeo Intieri, it represented an institutional extension of his civil philosophy: an applied moral science grounded in sociability, trust, justice, and public happiness. His lectures from this position were later published as the Lezioni di economia civile, the most influential vehicle for the diffusion of the passage from natural law to political economy. Enjoying a particularly wide reception Spain (where it was considered radical), America, and other European countries.

Genovesi died in Naples in 1769. His work left a lasting intellectual legacy that influenced Neapolitan Enlightenment culture and shaped debates on civil economy, natural law, and public happiness.

Genovesi’s principal engagement with natural-law theory belongs to the first phase of his intellectual development and is articulated within the so-called Latin cycle (1743–1752). During this period, he sought to construct a philosophical science of civil life grounded in metaphysics, philosophical anthropology, and natural theology. Within this broader intellectual programme, natural law represents the moment in which the ontological and anthropological premises of the system are translated into the normative structure of civil life. The central work of this phase is the Principia legis naturalis et officiorum humanorum (1752), also published under the title De legibus naturalibus. The treatise forms the final component of the Latin cycle, following earlier works such as the Metaphysica and the Principia theosophiae naturalia, and provides the normative articulation of the ontological, anthropological, and theological premises developed earlier.

Structurally, the Principia legis naturalis follows the general pattern of modern natural-law treatises while reconfiguring its internal logic. The argument begins with a methodological introduction establishing the need to understand human nature to determine the foundations of law. It then develops an anthropology of finitude marked by the imbecillitas naturae humanae (the structural insufficiency of human nature to live a fully human life outside civil society and that determines their vulnerability); examines the emergence of sociability and the first laws grounded in the communicatio bonorum (the communication or exchange of goods of mind, body, and fortune”); addresses obligation and the role of the supreme legislator; and considers the translation of natural law into civil legislation adapted to peoples, places, and times. Thus, the work connects the metaphysical order of nature with human vulnerability and the normative structure of civil coexistence.

Within the treatise Genovesi engages critically with the modern natural-law tradition. He rejects the reduction of right to power associated with Hobbes and Spinoza and argues that law necessarily entails obligation and therefore cannot be grounded merely in force or utility. He examines the different accounts of the foundations of obligation and sociability of jurists such as Grotius, Pufendorf, Cumberland, Wolff, and Heineccius. He also discusses moral philosophers such as Shaftesbury and Wollaston, whose appeal to a moral sense or affective harmony he considers insufficient to ground a universally binding law. These discussions clarify his position on the foundations of obligation, sociability, and the relation between natural law and civil legislation.

The principles elaborated in the Principia legis naturalis were subsequently reformulated pedagogically form in De jure et officiis (1764) and in the De jure et officiis epitome in usum tironum (1765), manuals intended for teaching purposes. These later works condense the main elements of his natural-law doctrine—iustitia, amicitia civilis, and the communicatio bonorum—within a didactic framework tothe moral formation of citizens.

Although Genovesi had already been appointed in 1754 to the chair of Commerce and Mechanics, from which he began to elaborate the project that would later be published as the Lezioni di commercio o sia d’economia civile, he continued thereafter to revisit the moral and juridical foundations of civil life. He returned to several themes of natural law in Della Diceosina o sia della filosofia del giusto e dell’onesto (1766), presenting a philosophy of justice and civic ethics connecting virtue, public utility, and natural justice.

These writings show that Genovesi did not conceive natural law as an isolated juridical discipline but as the normative foundation of civil life. In the architecture of his thought, the doctrine elaborated in the Principia legis naturalis provides the conceptual bridge between the metaphysical and anthropological investigations of the Latin cycle and the later development of civic ethics and civil economy.

In the Principia legis naturalis, Antonio Genovesi defines natural law as veritas realis, the objective order governing the relations among things and the first and supreme rule of life and conduct. Natural law therefore expresses the structure of the order of nature, as the normative standard prior to any particular legislation. At the same time, Genovesi emphasises the epistemic limits of human cognition: nature exceeds our cognitive capacity (nimis ampla), while human beings are finite, so that the law does not always stand clearly before us. Knowledge of natural law must therefore be progressively reconstructed through philosophical inquiry, education, and institutional mediation.

This conception rests on an anthropology of finitude characterised by imbecillitas. Human beings are rational yet dependent creatures who cannot preserve or perfect themselves alone. Sociability thus arises from structural insufficiency rather than mere benevolence or abstract moral inclination. Because individuals require cooperation to secure both preservation and improvement, civil life becomes the necessary sphere in which human beings can live well (bene beateque vivere) within the limits of their condition of mutual interdependence.

Within this framework Genovesi identifies the communicatio bonorum as the practical mechanism of sociability. Human beings respond to their imbecillitas through their exchange of goods of mind, body, and fortune (bona animi, bona corporis, bona fortunae), which enables common preservation and the progressive improvement of human life. Natural law provides the normative structure regulating this order of cooperation.

The synthetic core of natural law is condensed in the maxim of rendering to God, oneself, and others what is due to each, and of living in civil friendship (amicitia civilis). Within this framework, justice (iustitia) requires that one do no harm and render to each his due (suum cuique tribuere), while civil friendship imposes the duty of assistance and cooperation (quoad scimus ac possumus). Justice and civil friendship thus constitute the principles sustaining social cooperation and civil stability.

The obligatoriness of natural law has both an intrinsic and an extrinsic dimension. Intrinsically, the rule of natural law is inscribed in the human constitution and accompanied by conscientia sui, which refers primarily to reflexivity or self-awareness rather than to a fully developed doctrine of autonomous moral conscience. Extrinsically, obligation presupposes a superior legislator endowed with both right and power, guaranteeing the binding force of the law.

Genovesi engages critically with several authors of the modern natural-law tradition. Against the reduction of right to power associated with Hobbes and Spinoza, he argues that law necessarily entails obligation and therefore cannot be grounded merely in force or utility. While engaging with earlier jurists such as Grotius and Pufendorf, he questions the adequacy of foundations that explain obligation primarily through rational recognition of natural norms without sufficiently accounting for the binding force that makes a law truly obligatory. He likewise distances himself from attempts to derive the normative structure of sociability directly from natural benevolence or harmony, as in the case of Cumberland’s theory of universal benevolence. In relation to the systematic rationalism of Wolff and Heineccius, Genovesi resists the reduction of natural law to a deductive moral science grounded solely in rational order. Finally, he rejects the view—associated above all with Shaftesbury and echoed in the moral philosophy of Wollaston—that a moral sense or affective harmony could by itself provide a foundation for obligation.

Finally, natural law does not remain at the level of abstract universality but requires institutional translation: civil laws must be adapted to peoples, places, and times to sustain coexistence and promote civil well-being. Natural law should therefore be understood not as a system of individual rights but as a relational structure of duties (officia) and obligations (obligationes) governing cooperation, exchange, and civil order.

Natural law functions as the normative framework ordering the communicatio bonorum through which human beings respond to their structural vulnerability (imbecillitas) and sustain the cooperative order of civil life.