However, others claim that natural languages already have such minute differences, and that to assume that such differences would be indistinguishable would be to claim that natural languages fail at this. George Edmonds sought to improve Wilkins' Philosophical Language by reorganizing its grammar and orthography while keeping its taxonomy. More recent a priori languages (among many others) are Solresol and Ro. Jorge Luis Borges discusses Wilkins' philosophical language in his essay El idioma analítico de John Wilkins (The Analytical Language of John Wilkins), comparing Wilkins’ classification to the fictitious Chinese encyclopedia Celestial Emporium of Benevolent Knowledge and expressing doubts about any attempt at a universal classification. In Neal Stephenson's Quicksilver, character Daniel Waterhouse spends considerable time supporting the development of Wilkins' classification system. See also Oligosynthesis Philosophical language Semantic primitives Menace from the Moon (1925 novel) Notes Further reading Lewis, Rhodri. Language, Mind and Nature. Artificial Languages in England from Bacon to Locke, 2012 CUP, Cambridge Pinker, Steven. Words and Rules: The Ingredients of Language, 2000 External links (page images) (transcription) John Wilkins's Artificial Language, Austrian National Library, research blog The Analytical Language of John Wilkins, by Jorge Luis Borges Engineered languages 1668 works British essays Philosophy of language literature Social science essays