The Ludwik Zamenhof Centre building of the Ludwik Zamenhof Centre as a branch of Lukasz Gornicki’s Podlaska Library in Bialystok. It is the first public library in Poland that has a collection in Esperanto and publications devoted to this language. The Library’s opening hours: Tuesday, Wednesday, Thursday: 1 p.m. – 5.30 p.m., Friday: 1 p.m. – 5 p.m. The Ludwik Zamenhof Centre The Ludwik Zamenhof Centre is a city cultural institution established in Bialystok at 19 Warszawska St. upon the motion of the President of the City. It was founded to celebrate the organization of the 94th World Congress of Esperanto that was held
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".