"primary principle which [Brecht taught his collaborators was that of the "fabel" or story. The chain of events must be clearly and strongly established not just in the production, but beforehand in the actual play. Where it was not clear it was up to the ‘Dramaturg’ to alter the text, in order to cut unnecessary entanglements and come to the point. The play itself might be by Farquhar or Gerhart Hauptmann, Lenz or Molière, but ‘the writer’s words are only sacred insofar as they are true’. This went for Brecht’s own words as well, and his plays were subject to continual small changes even in the course of a single run. Atmosphere and ‘psychology’ did not matter as such; everything would emerge given a clear and credible sequence of concrete events. ‘Each scene,’ says a writer in "Theaterarbeit",