The Republic of Letters was the long-distance intellectual community in the late 17th and 18th centuries in Europe and the Americas. It fostered communication among the intellectuals of the Age of Enlightenment, or philosophes as they were called in France. The Republic of Letters emerged in the 17th century as a self-proclaimed community of scholars and literary figures that stretched across national boundaries but respected differences in language and culture. These communities that transcended national boundaries formed the basis of a metaphysical Republic. Because of societal constraints on women, the Republic of Letters consisted mostly of men. As such, many scholars use "Republic of Letters" and "men of letters" interchangeably.

An intellectual is a person who engages in critical thinking, research, and reflection about the reality of society, and who proposes solutions for its normative problems. Coming from the world of culture, either as a creator or as a mediator, the intellectual participates in politics, either to defend a concrete proposition or to denounce an injustice, usually by either rejecting, producing or extending an ideology, and by defending a system of values.