Ludwik Zamenhof
Persons, originating from Poland

Ludwik Zamenhof

Ludwik Zamenhof Born December 15, 1859 in Białystokk
Died April 14, 1917 in Warsaw
Known as Ludwik Lejzer or Ludwik Łazarz Zamenhof
The inventor of Esperanto, the most widely spoken
and successful constructed language in the world

He was also an eye doctor and a philologist. His native languages were Polish, Russian and Yiddish. Zamenhof was born to parents of Lithuanian Jewish descent. Białystok's population was made up of three major ethnic groups: Poles, Belarusians, and a large group of Yiddish-speaking Jews. Zamenhof supposed that the main reason for the hate and prejudice between those groups layed in mutual misunderstanding, caused by the lack of one common language that would play the role of a neutral communication tool between people of different ethnic and linguistic backgrounds.
In 1887, the book titled as "Lingvo internacia. Antaŭparolo kaj plena lernolibro" (International Language. Foreword And Complete Textbook) was published under the pseudonym "Doktoro Esperanto" (Doctor Hopeful), from which the name of the language derives.
More information

Polonica stamps:

Brazil 1945, 16 IV
Brazil 1960, 10 III
Bulgaria 1957, 27 VII
Bulgaria 1959, 14 XII
Bulgaria 1962, 14 VII
Bulgaria 1987, 12 II
Croatia 1997, 03 V
Cuba 1987, 16 III
German Dem. Rep. 1987, 07 VII
Hungary 1957, 08 VI
Israel 2006, 17 XII
Lithuania 2005, 23 VII
Soviet Union 1927, 013 VII
Suriname 1987, 04 II
Ukraine 2007, 01 III
Yugoslavia 1988, 14 VII