L.L. Zamenhof and Esperanto (This Week in Jewish History) L.L. Zamenhof (Source: Wikimedia Commons) L.L. Zamenhof (1859-1917) was a Polish Jew who invented the world’s most successful artificial language, Esperanto. Conceived as a vehicle for world peace, Esperanto is even regarded by the Oomoto religion of Japan as the “language of heaven.” Share this:TwitterTumblrFacebookLinkedInEmailRedditLike this:Like Loading...