Consent is often treated as a self-evident principle in contemporary society, a straightforward affirmation of personal autonomy, especially in matters of intimacy, contracts, and governance. Yet, when we historicize consent, we uncover a concept deeply shaped by cultural, legal, and social contexts that evolve over centuries. Far from being timeless or universal, consent has been interpreted, contested, and deployed in ways that reflect the power structures of specific eras. This article explores the historical development of consent, revealing how its meanings have shifted from ancient and medieval frameworks through early modern empires to modern liberal thought, while highlighting its persistent complexities and limitations.
The roots of consent trace back to ancient civilizations, where agreement often intertwined with communal or hierarchical obligations rather than individual choice. In classical Greek and Roman thought, consent appeared in political and legal spheres but rarely as an absolute individual right. Roman law, for instance, recognized consensual contracts in certain commercial dealings, emphasizing mutual agreement as binding. However, this was pragmatic, focused on facilitating trade and social order within a stratified society of citizens, slaves, and subjects. Slavery itself was sometimes rationalized through notions of implied or contractual consent, such as captives agreeing to servitude in exchange for survival, a perspective that modern sensibilities rightly reject but which underscores how consent could justify domination.
In medieval Europe, consent gained prominence particularly in religious and marital contexts, influenced by Christian theology. The Catholic Church emphasized free consent for the validity of marriage, viewing it as a sacramental union requiring the willing participation of both parties. This doctrine, rooted in canon law, prioritized verbal vows and intent over consummation in principle, though social practices often diverged. Families, lords, and economic considerations heavily influenced “consent,” especially for women, whose autonomy was curtailed by patriarchal norms. A sincere exchange of vows before God could theoretically constitute marriage, yet proving it in disputes required witnesses or other conditions. This system balanced individual will with communal stability, but it also allowed for coercion masked as agreement.
Religious conversion offered another arena where consent was invoked. Missionaries and authorities sought affirmations of faith, yet these were frequently entangled with promises of protection, land, or social advancement. In the medieval and early modern periods, consent discourses coexisted uneasily with ideals of hierarchy. A stable social order demanded deference to authority, yet appeals to voluntary agreement appeared in labor relations, oaths of fealty, and even colonization efforts. Such egalitarian rhetoric in hierarchical societies often served to legitimize power as much as to liberate choice.
The early modern era (roughly 1500–1800) amplified these tensions, particularly through European expansion and the rise of social contract theory. In colonial contexts, consent was a key rhetorical tool. Spanish and Portuguese empires documented “agreements” with indigenous leaders for pacification, tribute, trade, and conversion. Treaties and alliances often cited indigenous consent, yet these were shaped by unequal power dynamics, linguistic barriers, and threats of force. Consent was fragmented: it might mean participation in imperial administration for some local leaders, or acquiescence to labor demands for villagers. Far from neutral, these acts of agreement helped construct imperial legitimacy while masking coercion.
Philosophically, thinkers like Thomas Hobbes and John Locke transformed consent into a cornerstone of political legitimacy. Hobbes, in Leviathan (1651), portrayed the social contract as individuals consenting to surrender rights to an absolute sovereign to escape the state of nature. Locke, more optimistically, stressed limited government based on the consent of the governed, with rights to revolution if that consent was violated. These ideas influenced Enlightenment liberalism, emphasizing rational, voluntary agreement as the basis for authority. Yet, even here, consent had boundaries: Locke rejected contracts that alienated one’s fundamental liberty, such as voluntary enslavement.
By the 19th century, consent evolved amid industrialization, feminism, and legal reforms. In sexual and marital law, age-of-consent statutes emerged, reflecting growing recognition of vulnerability, particularly for minors and women. However, capacity to consent remained socially constructed, influenced by class, gender, and eugenic ideas. Court cases from early 20th-century England, for example, showed how judges assessed consent through lenses of mental fitness and social propriety, often disadvantaging the marginalized. Seduction suits and moral panics highlighted public anxieties over female agency, framing consent as both a right and a site of protectionist control.
In medical ethics, informed consent developed more slowly. Ancient and medieval practices involved limited disclosure, with trust in physicians paramount. The modern principle crystallized in the 20th century, spurred by revelations of unethical experiments and codes emphasizing voluntary, informed agreement for research subjects. This shifted from paternalistic medicine to patient autonomy, though enforcement varied between treatment and research contexts.
The 20th and 21st centuries have seen consent scrutinized through feminist, postcolonial, and critical lenses. Movements have pushed “enthusiastic consent” beyond mere absence of refusal. Yet, historicizing reveals ongoing challenges: consent can be performative under power imbalances, retroactively contested, or insufficient in addressing structural inequalities. In liberal democracies, voter consent legitimizes governance, but critiques question how informed or free it truly is amid complex influences.
Historicizing consent denaturalizes it. It shows the concept as contingent and as shaped by era-specific norms rather than a universal ideal. In antiquity and the Middle Ages, it balanced individual will with divine and social order. Early modern empires weaponized it for expansion. Liberalism elevated it as emancipation, yet practice often fell short. Today, amid digital privacy, sexual ethics, and global justice, consent remains fraught: empowering yet imperfect, a tool for both liberation and subtle control.
Understanding this history encourages humility and nuance. Rather than assuming consent as a panacea, we must examine the conditions that make agreement meaningful, adequate information, absence of coercion, and relative equality. As societies grapple with new frontiers like technological interactions or bioethics, historicizing reminds us that consent’s future will be as contested as its past. By tracing its threads across time, we gain insight into power, agency, and the perpetual negotiation of human relations.
Bibliography
Abry, Kane. The Construction, Sources, and Implications of Consensualism in Contract: Lesson from France. Cham: Springer, 2023.
Delameillieure, Chanelle, and Jolien Gijbels, eds. Consent: Een geschiedenis van dwang en vrije wil en alles daartussenin. Tielt: Lannoo, 2025.
Johnston, David. “A History of Consent in Western Thought.” In The Ethics of Consent: Theory and Practice , edited by Franklin Miller and Alan Wertheimer, 25–54. New York: Oxford University Press, 2010.
Lammasniemi, Laura. “Capacity to Consent to Sex: A Historical Perspective.” Oxford Journal of Legal Studies 44, no. 4 (2024): 979–1001.
O’Shea, Tom. “Consent: Historical Perspectives in Medical Ethics.” In The Routledge Handbook of the Ethics of Consent, edited by Peter Schaber and Andreas Müller, 261–271. New York: Routledge, 2018.
