Diary of a Man in Despair (Tagebuch eines Verzweifelten) is a journal written by the German writer Friedrich Reck-Malleczewen during the 1930s and 1940s. It expresses his passionate opposition to Adolf Hitler and Nazism. It was originally published in 1947, but received little recognition. It has since been republished in English and has become regarded as a classic statement about Nazi Germany. The New York Times said the book is stunning to read because, in this journal, invective achieves the level of art and hatred achieves a tragic grandeur.