The Unheeded Warning richly portrays the turbulent interwar period in Vienna and Berlin through the eyes of one of the century's foremost intellectuals and activists. Psychologist, novelist, essayist, and revolutionary, Manes Sperber begins his story in Vienna when he was thirteen years old and concludes the book-which is the second volume of his three-volume autobiography, All Our Yesterdays-with a gripping account of his imprisonment and release by the Germans in Berlin.