Walter Sittler plays Erich Kästner. The book for the new stage program "The Little Multiplication of Being." In November, it’s time again: Walter Sittler is going on tour with his new Kästner program "The Little Multiplication of Being." Over the course of four months, he will perform on stage in 70 cities, captivating the audience together with six musicians. This book collects the original texts from Walter Sittler's new program, some of which have been shortened for the stage version. The amusing, enlightening, and moving texts of Erich Kästner and some of his companions condense into a biography in self-testimonies with an astonishing effect: Suddenly, he stands before us, Erich Kästner, the poet and the man. This book is introduced with a touching foreword by Walter Sittler. "He was a most orderly, so to speak conscientious, yes, bourgeois bohemian.".