Reviews of Ajdukiewicz’s and Kotarbiński’s PublicationsBlaustein, Leopold (Avtor) Gołaszewski, Filip (Prevajalec) AjdukiewiczKotarbińskiexpressionmeaningmotivation relationsreismBlaustein reviews two publications by representatives of the Lvov–Warsaw School: Kazimierz Ajdukiewicz’s On the Meaning of Expressions (1931) and Tadeusz Kotarbiński’s Gnosiology: The Scientific Approach to the Theory of Knowledge (1929). The examination of Ajdukiewicz’s publication focuses on semantic theory developed through motivational relations between sentences, language directives, and inferential substitutivity relations. Blaustein’s analysis addresses the distinction between verbal and intuitive derivation, disposition toward a language, and definition of synonymy through inferential substitutivity. With respect to Kotarbiński’s publication, Blaustein analyzes the integration of the reist ontology with epistemological realism across semantic theory, epistemology, formal logic, and scientific methodology. The reviews examine both the theoretical contributions and the methodological approaches of both philosophers. They also identify specific limitations in metaphysical assumptions and applicability beyond formal logical systems.20252026-01-14 03:52:45Neznano25218UDK: 801.73ISSN pri članku: 1318-3362COBISS_ID: 264532227sl