Roman Ingarden (1893 - 1970) - philosopher. Initially connected with the Lvovian, and later the Cracovian, academic milieu. Sspecial interest: ontology. His views on the subject of art are contained in his two-volume work 'Spór o istnienie świata' (The Controversy over the Existence of the World' (1947, 1948; also in a German version, 'Der Streit um die Existenz der Welt, 1964, 1965). He was also interested in literature, and his major work on this subject was 'Das literarische Kuntswerk'(1957; On Literary Works). He also addressed other art-forms (an English translation of one of his books on the arts is 'The Ontology of the Work of Art: The Musical Work, the Picture, the Architectural Work, the Film'(1989). Yet other fields he studied were the theories of cognition and aesthetics , his earliest book published in this subject was 'Ueber die Stellung der Erkenntnistheorie im System der Philosophie' (1925).