The Poznań Society for the Advancement of Arts and Sciences (, PTPN) is a learned society in Poznań, Poland, established in 1857, of scholars and scientists in all branches of learning. It has been one of the largest and most important general learned organizations in Poland. When founded in the 19th century, the Poznań Society was the chief Polish scientific and cultural organization in Prussian Poland, and until the creation of Kraków's Academy of Learning (Akademia Umiejętności) in 1871–73 it was the most important learned society in all the Polish lands. In addition to its learned activities, the Society collected and secured art works and Polish national mementos. In 1919 the Society initiated the founding of University of Poznań (current Adam Mickiewicz University). Presidents August Cieszkowski Tytus Działyński August Cieszkowski for second time Karol Libelt Stanisław Egbert Koźmian, August Cieszkowski for the third time Archbishop Edward Likowski Heliodor Święcicki Bronisław Dembiński Zygmunt Lisowski Zygmunt Wojciechowski, Kazimierz Tymieniecki, Stefan Barbacki, Gerard Labuda, Zdzisław Kaczmarczyk, Zbigniew Zakrzewski. Noted members August Cieszkowski (1814–94), Polish philosopher, social and political activist, co-founder of the Polish League (Liga Polska), co-founder and president of the PTPN Tytus Działyński (1796–1861), Polish political activist, protector of arts Kazimierz Jarochowski (1828–88), Polish historian, publicist of the Dziennik Poznański (Poznań Daily), co-founder of PTPN Karol Libelt (1807–75), Polish philosopher, political and social activist, president of PTPN Teofil Matecki (1810–86), Polish physician, social activist, member of PTPN, founder of the Adam Mickiewicz monument of Poznań Leon Wegner (1824–73), Polish economist and historian, co-founder of PTPN Publications Badania Fizjograficzne nad Polską Zachodnią Roczniki Historyczne Roczniki Dziejów Społecznych i Gospodarczych Slavia Occidentalis Lingua Posnaniensis Studia Automatyki See also Warsaw Society of Friends of Learning Academy of Sciences Polish Academy of Learning Polish Academy of Sciences References External links Official website Annals of the Society of Friends of Poznań Sciences Society of Friends of Learning Learned societies of Poland Grand Duchy of Posen