Tadeusz Kotarbiński

Tadeusz Kotarbiński
Born31 March 1886
Died3 October 1981 (aged 95)
NationalityPolish
Education
EducationJagiellonian University
University of Lviv (PhD)
Philosophical work
Era20th-century philosophy
RegionWestern philosophy
SchoolLwów–Warsaw school of logic
InstitutionsWarsaw University
Main interestsOntology, formal logic, ethics, praxeology
Notable ideasReism
Logology

Tadeusz Marian Kotarbiński (Polish: [kɔtarˈbij̃skʲi]; 31 March 1886 – 3 October 1981) was a Polish philosopher, logician and ethicist.

A pupil of Kazimierz Twardowski, he was one of the most representative figures of the Lwów–Warsaw School, and a member of the Polish Academy of Learning (PAU) as well as the Polish Academy of Sciences (PAN). He developed philosophical theory called reism (Polish: reizm) and an ethical system called independent ethics. Kotarbiński also contributed significantly to the development of praxeology.

Henryk Greniewski and Kazimierz Pasenkiewicz were doctoral students under Kotarbiński.