Notabene 45 is a literary diary by Erich Kästner, created from his notes during the first half of 1945. In this work, Kästner offers a sarcastic and concise depiction of the final months of the Nazi era as well as daily life during a time of difficult new beginnings. The texts are both shocking and enlightening, providing a unique insight into the social and political circumstances of this period. Notabene 45 serves not only as a historical document but also as a timeless appeal for humanity and understanding of human experiences in times of crisis. The combination of personal reflection and social analysis makes this work a valuable read for anyone interested in the history and challenges of humanity.