At first I intended to carry on working in St. Prex [in Switzerland, circa 1914 – 1915] in the same way I had been working in Munich [location of his Blaue Reiter / Blue Rider period]. But something inside me prevented me from painting colourful, sensuous pictures. Suffering had changed my soul, telling me to find other forms and colours to express what was on my mind.

Life Memories (1938), p. 149