Esperanto, born at the end of the 19th century as a project for the creation of an auxiliary language for the purposes of international communication, shows on the background a parallel will for religious planning. With this contribution we intend, on the one hand, to present briefly the linguistic-cultural-religious proposal of L.L. Zamenhof, from which the Esperantist movement is promoted, on the other hand to investigate, through this heterodox example, the complex bundle of languages / cultures / religions / Weltan¬schauun¬gen, also in the light of a cultural evolution that emerges clearly in the relationship between the nineteenth-twentieth century matrices of the Esperanto project and its contemporary reality.
Keywords: Esperanto, L.L. Zamenhof, Esperantist movement, cultural evolution