Meet the boy who made up his own language -- and brought hope to millions. Once there was a town of many languages but few kind words. Growing up Jewish in Bialystok, Poland, in the late 1800s, young Leyzer Zamenhof was surrounded by languages: Russian, Yiddish, German, Polish, and many others. But the multiethnic Bialystok was full of mistrust and suspicion, and Leyzer couldn't help but wonder: If everyone could understand each other,...