Louis-Christophe Zaleski-Zamenhof Esperanto on behalf of the Zamenhof family, Louis-Christophe Zaleski-Zamenhof has nevertheless been disinclined to assume a leading role in the Esperanto movement. Though he had no plans to write an autobiography, Polish journalist Roman Dobrzyński persuaded him to participate in a series of conversations over a ten-year period, which resulted in "La Zamenhof-strato" ("Zamenhof Street", 2003), a book detailing his life during the Nazi occupation of Poland, including his experiences in the Warsaw Ghetto and the Polish Resistance. Beyond an account of his own life, the book also relates the philosophy, history and tribulations of the Esperanto movement pioneered by
Ludwik Fleck Ludwik Fleck Ludwik Fleck (11 July 1896 – 5 June 1961) was a Polish and Israeli physician and biologist who did important work in epidemic typhus in Lwów, Poland, with Rudolf Weigl and in the 1930s developed the concepts of the ""Denkstil"" ("thought style") and the ""Denkkollektiv"" ("thought collective"). The concept of the "thought collective" defined by him is important in the philosophy of science and in logology (the "science of science"), helping to explain how scientific ideas change over time, much as in Thomas Kuhn's later notion of the "paradigm shift" and in Michel Foucault's concept of the "episteme".