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