LL Zamenhof's 150th Birthday - Founder of Esperanto

Source: http://www.google.com/logos/esperanto_09.gif
Ludwig Lazarus Zamenhof (pronounced /ˈzɑːmɨnhɒf/ in English; born Leyzer Leyvi Zamengov) (December 15, 1859 – April 14, 1917) was an ophthalmologist, philologist, and the inventor of Esperanto, a constructed language designed for international communication. [Read more on Wikipedia]