“Since 1929 I have suffered from an extremely painful disease [arthritis deformans] which gets worse every year. Little by little my arms and hands have become stiff and bent and I have terrible pain. This stiffness in my elbows and wrists has tremendously hindered my painting and I have had to find a new technique. My art in the last period has all been in small format, but my paintings have become even deeper and more spiritual..”