[Manuscript] APOLLINAIRE (Guillaume): About two works on the question of artificial languages. (circa 1908-1909). 6 handwritten leaves measuring 21 by 27 cm, numbered and signed. Original manuscript of the article published in PAN in March 1909, cited in OEuvres complètes, Michel Décaudin ed, Paris, André Balland and Jacques Lecat, 1966, t. 3, p. 832-835. In this article Apollinaire contrasts the conceptions of Pyrrhus Bardyli and Wilhelm Ostwald. Pyrrhus BARDYLI: Essai sur les langues naturelles et les langues artificielles. Brussels, Kiessling. Wilhem OSTWALD: Die Welsprache. Franckh Verlaghandhing, Stuttgart (1904). Good condition of the 6 leaves. Legible writing, with numerous erasures and additions, showing the elaboration of the final text. The article is a reflection on the utopian project of a universal language created from scratch (like Volapük and Esperanto). Apollinaire does not believe in the future of a language created from scratch, but rather predicts the creation of an international language that is continually created from exchanges, inventing itself through the multiplicity of uses... Through this work, Apollinaire shows that his poetry, with its new forms, is based on an in-depth reflection on language... "An international vocabulary is being formed, drawn from scientific, commercial, slang, military, theatrical terms, etc., which will perhaps slowly and smoothly replace national idioms, and will continue to evolve among languages, dialects, patois, slang and jargons". An exceptional document.