Otto von Bismarck, remark to Meyer von Waldeck, 11 August 1867. Quoted in Heinz Amelung, Bismarck-Worte, 1918; as reported in The Yale Book of Quotations, Yale University Press, 2006. This is widely attributed to Bismarck but there is no firsthand account of his exact words, as discussed in Ralph Keyes, The Quote Verifier, Macmillan, 2006.https://en.wikiquote.org/wiki/Politics