Kazimierz Twardowski

Kazimierz Jerzy Skrzypna-Twardowski (20 October 1866 – 11 February 1938) 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. Academic career Twardowski's family belonged to the Ogończyk coat of arms. Twardowski studied philosophy at the University of Vienna with Franz Brentano ,and Robert von Zimmermann. In 1891 he received his doctorate with his dissertation, Idee und Perzeption (Idea and Perception). In 1894 Twardowski published a book, entitled Zur Lehre vom Inhalt und Gegenstand der Vorstellungen, Eine psychologische Untersuchung (On the Doctrine of the Content and Object of Presentations). The book was written between 1891 and 1893, although excerpts of the book were republished under the title On the Content and Object of Representations, which is an early text on semiotics.