"This writer created a new language."
Translation:Этот писатель создал новый язык.
Don't forget Marc Okrand, creator of Klingon (of Star Trek fame), and L. L. Zamenhof, inventor of the most successful planned language, Esperanto, which you can study right here on Duolingo!
Not created by the original author of the books. Same objection applies to Okrand (Klingon). If we're just considering invented languages, there have been over 1000. Famous author who created languages? The main name on the list is indeed J. R. R. Tolkien.