Reism or concretism is a philosophical theory of Tadeusz Kotarbiński, based on the ontology of Stanislaw Lesniewski, specifically, his "calculus of names".
Tadeusz Kościuszko | Tadeusz Kantor | Pan Tadeusz | Tadeusz Różewicz | Tadeusz Mazowiecki | Tadeusz Kotarbiński | Tadeusz Peiper | Tadeusz Fijewski | Tadeusz Rozewicz | Tadeusz Góra | Tadeusz Borowski | Tadeusz Stefan Zieliński | Tadeusz Kraus | Tadeusz Banachiewicz | Tadeusz Baird | Polish 1st Tadeusz Kościuszko Infantry Division | Tadeusz Sulimirski | Tadeusz Sołtyk | Tadeusz Romer | Tadeusz Piotrowski | Tadeusz Pieronek | Tadeusz Nalepa | Tadeusz Mirosław Kondrusiewicz | Tadeusz Makowski | Tadeusz Kutrzeba | Tadeusz Kossak | Tadeusz Kosciuszko | Tadeusz Kantor, ''Kantor's chair'', concrete sculpture, height 14 m. Hucisko | Tadeusz Estreicher | Tadeusz Dołęga-Mostowicz |
There were also repeated attempts by some Polish academics and philosophers, like Leszek Kołakowski, Tadeusz Kotarbiński, Kazimierz Ajdukiewicz and Stanisław Ossowski to develop, as a slowly eroding opposition, a specific form of Polish Marxism.
The list included the "elite of Polish scholarship", signatories such as Tadeusz Kotarbiński, sociologists Józef Chałasiński, Stanisław and Maria Ossowska and Jan Stanisław Bystroń, biologists Stanisław Kulczyński and Jan Dembowski, psychologist Władysław Witwicki, physicist Konstanty Zakrzewski, and historians Seweryn Wysłouch, Tadeusz Manteuffel and Natalia Gąsiorowska.
The training was not limited to military affairs and among the civilians working there were some of the most notable scientists of the era, including Tadeusz Kotarbiński, Edward Lipiński and Marian Kukiel.