Kazimierz Jerzy Skrzypna-Twardowski was a Polish philosopher, psychologist, logician, and rector of the Lwów University. He was initially affiliated with Alexius Meinong's Graz School of object theory
Warsaw University Library – at the entrance are pillared statues of Lviv-Warsaw School of Logic philosophers (right to left) Kazimierz Twardowski, Jan Łukasiewicz, Alfred Tarski, and Stanisław Leśniewski