Mime is serious to Decroux. At some of his performances if the audience interrupts with applause, he is insulted and immediately retires from the stage!
In the film, we see Barrault do many of Decroux's mime exercises during moments of Debureau's performances. Does Decroux think this is a good film? It is said that when he views it, tears run down his cheeks as he mouths all the lines.