During the French Revolution, the term "citizen" (citoyen) emerged as a central and revolutionary concept. Prior to the Revolution, French society was firmly rooted in the feudal system, with social hierarchies and titles denoting one's place in society. Nobles, clergy, and commoners were distinctly categorized, and titles such as "Monsieur," "Madame," and "Mademoiselle" were commonplace. The concept of citizenship, which emphasized equality and the rights of individuals within the state, played a significant role in dismantling the old regime. As early as 1789, with the onset of revolutionary fervor, the term "citizen" began to replace traditional titles as a form of address. The National Assembly, formed in June 1789, was instrumental in this shift. The declaration adopted by the Assembly, the Declaration of the Rights of Man and of the Citizen (26 August 1789), underscored that men are born and remain free and equal in rights. This declaration marked a significant ideological shift, promoting the universality of human rights and the egalitarian principles that underpinned the Revolution. The use of "citizen" as an address was both a symbolic and practical gesture. By standardizing a single term for everyone, the Revolution sought to erase distinctions based on birth, privilege, or social standing. It was mandated that all members of society, regardless of their previous titles or ranks, address each other as "citizen." This practice extended to both public and private spheres and was reflected in official documents, correspondence, and even in legal contexts. The title "citizen" encapsulated the revolutionary ideals of liberty, equality, and fraternity. It acted as a reminder that all individuals had a role and stake in the new Republic. The political culture of the time was imbued with republican virtues, where the concept of the virtuous citizen (one who participated actively in public life and upheld the principles of the Republic) became paramount. Revolutionary leaders frequently invoked the term to foster a sense of collective identity and to galvanize support for the republican cause. Robespierre and his fellow Jacobins were particularly vocal in advocating for the use of "citizen." In their vision of the Republic, active citizenship was not merely a right but a duty. The Reign of Terror (1793-1794), overseen by the Committee of Public Safety (dominated by Robespierre), was also marked by rigorous enforcement of revolutionary language and policies. Those who resisted or failed to adopt the term "citizen" faced suspicion and, potentially, persecution (as it suggested an attachment to the old order). The cultural shift towards the term "citizen" was accompanied by a broader transformation in societal norms and values. Public festivals, civic ceremonies, and education were all imbued with the language and ethos of citizenship. Efforts were made to replace religious and monarchist symbols with imagery celebrating the Republic and its citizens. Art, literature, and theatre of the period reflect this profound change. In summary, the adoption of the title "citizen" during the French Revolution represented a fundamental transformation in social and political structures. It signified the rejection of the ancien régime and the embrace of a new egalitarian order. Through its widespread use, the Revolution sought to inculcate the ideals of equality and fraternity, ensuring that every individual recognized their rights and responsibilities within the nascent Republic.