One must at least know what the lies are.

Notes from Wikiquote

As quoted in I Will Bear Witness: A Diary of the Nazi Years, 1933-1941 (1999), by Martin Chalmers

LTI – Lingua Tertii Imperii (The Language of the Third Reich) (1947)

LTI – Lingua Tertii Imperii (The Language of the Third Reich) (1947)

Quote text and notes from Wikiquote: Victor Klemperer (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.