EN
The text is dedicated to the Polish School of Praxiology, founded primarily by Tadeusz Kotarbiński. The aim of the article is to present an outline of the history of the School, to review the scientific contribution of its main representatives, and to indicate its essential features. The School connects praxiology sensu scricto (theory of action), ethics, together with felicitolology, within the framework of practical philosophy. Kotarbiński’s concept of praxiology can be described as “small philosophy” in contradistinction to many 19th-century all-encompassing syntheses, which were often substitutes of worldviews; in the interpretation of Wojciech W. Gasparski this concept is also called “philosophy of practicality.” In the article, the Polish School of Praxiology is compared in some aspects with the Lvov-Warsaw School and the Austrian School of Economics (more precisely, with the philosophical foundations of the latter school).