Ingarden Roman Witold (1893–1970), the leading Polish phenomenologist, who taught in Lvov and Cracow and became prominent in the English-speaking world above all through his work in aesthetics and philosophy of literature. His Literary Work of Art (German 1931, English 1973) presents an ontological account of the literary work as a stratified structure, including word sounds and meanings, represented objects and aspects, and associated metaphysical and aesthetic qualities. The work forms part of a larger ontological project of combating the transcendental idealism of his teacher Husserl, and seeks to establish the essential difference in structure between minddependent ‘intentional’ objects and objects in reality. Ingarden’s ontological investigations are set out in his The Controversy over the Existence of the World (Polish 1947/48, German 1964–74, partial English translation as Time and Modes of Being, 1964). The work rests on a tripartite division of formal, material, and existential ontology and contains extensive analyses of the ontological structures of individual things, events, processes, states of affairs, properties and relations. It culminates in an attempted refutation of idealism on the basis of an exhaustive account of the possible relations between consciousness and reality. See also PHENOMENOLOGY. B.Sm.