 From 1912 he was providing pieces for "Die Aktion", a newly launched magazine with its focus on literature and left-wing politics in which he also published some of his poetic and lyrical creations.One of these was his essay "Der Käfig" which appeared in 1913/1914.During 1913/1914 he actively promoted "Die Aktion Authors' Evenings" at the magazine, together with the likes of Gottfried Benn, Paul Boldt, Alfred Lichtenstein and Franz Pfemfert.