 He often combined mysticism, eroticism, and symbolism, in Art Nouveau and Sezessionist styles.By 1900 he was one of the best known painters in Germany, and had come under the influence of writers such as Arthur Moeller van den Bruck, Heinrich and Julius Hart, and the anti-materialist garden city and "Wandervogel" movements.In 1912 he designed a famous poster for a congress on "biological hygiene" in Hamburg, showing a man in the process of breaking his bonds and rising up to the stars.