To me the most important thing [in a picture] is roundness captured in height and breadth. Roundness in the plane, depth in the feeling of the plane.

Quote from Schopferische Konfession (Creative credo) of 1918; first published in 'Tribune der Kunst und Zeit', no. 13 (1920): 66; for an English translation, see Victor H. Miesel, ed. Voices of German Expressionism, (Englewood Cliffs, N.J.: Prentice Hall, 1970); as quoted in 'Portfolios', Alexander Dückers; in German Expressionist Prints and Drawings - Essays Vol 1.; published by Museum Associates, Los Angeles County Museum of Art, California & Prestel-Verlag, Germany, 1986, p. 101