L. L. Zamenhof L. L. Zamenhof Ludwik Lejzer Zamenhof (; , ; – ), credited as L. L. Zamenhof and sometimes as the pseudonymous Dr. Esperanto, was a Polish-Jewish ophthalmologist and the creator of Esperanto, the most successful constructed language in the world. He grew up fascinated by the idea of a world without war and believed that this could happen with the help of a new international auxiliary language, which he first developed in 1873 while still in school. Zamenhof was born on 15 December (3 December OS) 1859, the son of Markus Zamenhof (27 January 1837 - 29 November 1907) and
Ludwik Dorn conflict with the Prime Minister Jarosław Kaczyński. Elected a Marshal of the Sejm on 27 April 2007, with 235 votes, after Marek Jurek's resignation. On 4 November 2011 he, along with 15 other supporters of the dismissed PiS MEP Zbigniew Ziobro, left Law and Justice on ideological grounds to form a breakaway group, United Poland. Graduated with a degree in sociology from Warsaw University in 1978. Ludwik Dorn Ludwik Dorn (, born 5 June 1954 in Warsaw) is a Polish conservative politician, former Deputy Prime Minister and member of Sejm elected on 5 November 2007. He was born Ludwik Dornbaum,