Ideological connections between the Lvov-Warsaw School and German-speaking philosophy are well known. The genesis of these connections is obvious. The creator of the School, Kazimierz Twardowski, was a student of the Viennese philosopher – Franz Brentano, and many Twardowski's students, especially from the older generation, studied (or complemented their studies) for a longer or shorter period in Austria, Germany and Switzerland. Many representatives of schools consciously referred to the achievements of German-speaking philosophers: primarily to Bernard Bolzano from Prague, Wilhelm Wundt from Leipzig, Gottlob Frege from Jena, David Hilbert from Gottingen, Hans Cornelius from Munich, Moritz Schlick, Rudolf Carnap, Karl Popper and Kurt Gödel from Vienna, Hans Reichenbach from Berlin etc.