  Although Kotarbiński was a philosophical grandson of Brentano (via K. Twardowski, a student of the latter), he developed his version of reism independently (Woleński 1996, 357). This took place in the 1920s. The most extensive treatment of Kotarbiński’s reism is to be found in his book Elementy, published in 1929 (in Polish). In general, Kotarbiński followed Brentano’s criticism of abstract objects.  Kotarbiński worked with a simplified table of ontological categories proposed by W. Wundt at the end of the 19th century. This table includes: things, states of affairs, relations and properties. Accordingly, Kotarbiński stated reism by two theses: