ベルリン分離派
After 1900, he lived in Berlin. He married one of his students, Anna von Hansemann (1897-1992) and she frequently served as his model. He was one of the late comers to the Berlin Secession. Among his best-known portraits are those of Gerhart Hauptmann, Ernst Barlach, Emil Nolde, Käthe Kollwitz and Eugen d’Albert.