World. In his aesthetic investigations, Ingarden considered aesthetics as an integral part of philosophy. He argued that his aesthetic theory is not only an analysis of art but an approach that answers basic philosophical issues. Ingarden also attempted to establish a phenomenological circle at Lvov. The group, which focused on aesthetics and descriptive psychology, attracted some of Twardowski's students including Leopold Blaustein and Eugénie Ginsberg. Ingarden was a close associate of Edith Stein. He came to her defense when her work with Husserl was challenged. Ingarden wrote his own biography in 1949. This work, which was written in third person, was one of the three biographies he submitted to Tatarkiewicz, who was then revising his Historia filozofii (History of philosophy). The philosopher had also undertaken work for Husserl. Main works in German Intuition und Intellekt bei Henri Bergson, Halle: Max Niemeyer, 1921 Essentiale Fragen. Ein Beitrag zum Problem des Wesens, Halle: Max Niemeyer, 1925 Das literarische Kunstwerk. Eine Untersuchung aus dem Grenzgebiet der Ontologie, Logik und Literaturwissenschaft, Halle: Max Niemeyer, 1931 Untersuchungen zur Ontologie der Kunst: Musikwerk. Bild. Architektur. Film, Tübingen: Max Niemeyer, 1962 Der Streit um die Existenz der Welt, Bd. I, II/I, II/2. Tübingen: Max Niemeyer, 1964 Vom Erkennen des literarischen Kunstwerks, Tübingen: Max Niemeyer, 1968 Erlebnis, Kunstwerk und Wert. Vorträge zur Ästhetik 1937-1967, Tübingen: Max Niemeyer, 1969 Über die Verantwortung. Ihre ontischen Fundamente, Stuttgart: Reclam, 1970 Über die kausale Struktur der realen Welt. Der Streit um die Existenz der Welt, Band III, Tübingen: Max Niemeyer, 1974 Main works in Polish O poznawaniu dzieła literackiego (The Cognition of the Literary Work of Art), Ossolineum, Lwów: 1937 O budowie obrazu. Szkic z teorii sztuki (On the Structure of Paintings: A Sketch of the Theory of Art), Rozprawy Wydziału Filozoficznego PAU Vol. LXVII, No.2, Kraków, 1946 O dziele architektury (On Architectural Works), Nauka i Sztuka, Vol. II, 1946, No. 1, pp. 3-26 and No. 2, pp. 26-51 Spór o istnienie Świata (Controversy over the Existence of the World), PAU, Vol. I, Kraków: 1947, Vol. II, Kraków, 1948 Szkice z filozofii literatury (Sketches on the Philosophy of Literature), Vol. 1, Spółdzielnia wydawnicza "Polonista," Łódz, 1947 Elementy dzieła muzycznego (The Elements of Musical Works), Sprawozdania Towarzystwa Naukowego w Toruniu, Vol. IX, 1955, Nos. 1-4, pp. 82-84 Studia z estetyki (Studies in Aesthetics), PWN, Vol. I Warszawa, 1957, Vol. II, Warszawa, 1958 O dziele literackim (On Literary Works). PWN, Warszawa, 1960 Przeżycie -