 The circle of influence continued to grow for Scheler. During his time in Berlin and in Cologne, Scheler would meet and correspond regularly with prominent, German intellectuals such as Max Brod, Franz Werfel, Martin Buber, Arnold Zweig, Ernst Troeltsch, Werner Sombart, Albert Einstein, Alfred Kerr, Walter Rathenau, Paul Tillich, Romano Guardini and Ernst Bloch. His circle of collaboration and discussion was not limited to philosophy. Scheler corresponded with the leading psychologists and natural scientists such as Wertheimer, Köhler, Buytendijk, and Wasserman. Musicians, poets and literary scholars such as Eduard Erdmann, Otto Klemperer, Paul Valéry, Rainer Maria Rilke, Romain Rolland, Ernst Robert Curtius were also part of his circle of influence. A very close friend of Scheler’s in Cologne up until his death was the painter Otto Dix.