Lux in Tenebris is a short one-act farce, written in prose, by the German dramatist Bertolt Brecht. It is thought that he wrote it in 1919, under the influence of "that great Munich clown Karl Valentin".Willett and Manheim (1994, viii).Works cited Willett, John and Ralph Manheim. 1994. Introduction and Editorial Notes. Collected Plays: Two by Bertolt Brecht. Bertolt Brecht: Plays, Poetry, Prose Ser. London: Methuen. ISBN 0413685608.NotesBertolt Brecht plays191