Black Notebooks

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The Black Notebooks (German: Schwarze Hefte) are a set of 34 notebooks written by German philosopher Martin Heidegger (1889–1976) between October 1931 and 1970. Originally a set of small notebooks with black covers in which Heidegger jotted observations (sometimes called "sketches").^[1]

Heidegger called the Black Notebooks the “workshop notes” (“Werkstattaufzeichnungen”).^[2] One of Heidegger's assistants, Friedrich-Wilhelm von Herrmann, said the Notebooks were kept on a table next to Heidegger's bed, and that Heidegger wrote in the notebooks at night before going to sleep.