Interlinguistics of interlinguistics are, however, not so constructive, but rather descriptive, comparative, historic, sociolinguistic, or concerned with translation by humans or machines. As for Esperanto, which is the most widely used constructed interlanguage, there is a relatively abundant literature about the language itself and its philology (see Esperantology). Only a few of the many constructed languages have been applied practically to any noteworthy extent. The most prosperous were Volapük (1879, Johann Martin Schleyer), Esperanto (1887 Ludwik Lejzer Zamenhof), Latino sine flexione (1903, Giuseppe Peano), Ido (1907, Louis Couturat), Occidental-Interlingue (1922, Edgar de Wahl) and Interlingua (1951, IALA and Alexander Gode), with
Ludwik Starski Ludwik Starski Ludwik Starski (born Ludwik Kałuszyner, 1 March 1903 in Łódź – died 29 February 1984 in Warsaw) was a Polish Jewish lyricist, sound engineer and screenwriter of the twentieth century. He was the father of the cinematographer Allan Starski, who often worked with movie director Andrzej Wajda. Ludwik worked with Eugeniusz Bodo, Władysław Szpilman and with Tadeusz Sygietyński. Before the Second World War he was a journalist with the newspaper "Express Wieczorny Ilustrowany (The Evening Express)". He was also a lyricist of songs for cabarets, cafés and theater, including theater "Qui Pro Quo, Gong, Morskie Oko, Perskie Oko,