Attributed in Patton (motion picture) (1970). This is sometimes said to have been uttered in a speech by Patton to the Sixth Armored Division of the Third Army, 31 May 1944, but documentation is lacking. The following poem appeared in the Bureau of Aeronautics Navy Department News Letter, 1 Jan. 1943: "The greatest duty of a sailor / Is duty from worries and cares, / Not to die for his country, / Make our enemies die for theirs!"
Adolf Hitler (1994). “The Speeches of Adolf Hitler, April 1922-August 1939: An English Translation of Representative Passages Arranged Under Subjects and Edited by Norman H. Baynes”
Albert Einstein (2016). “The Albert Einstein Collection: Essays in Humanism, The Theory of Relativity, and The World As I See It”, p.45, Open Road Media
Radio broadcast, 29 Dec. 1940. According to Walter Isaacson and Evan Thomas, The Wise Men (1986), this slogan was picked up for Roosevelt's address after it was used in conversation by John McCloy, who had gotten it from Jean Monnet.
Sir Winston Churchill, Winston Churchill (1965). “Great destiny: sixty years of the memorable events in the life of the man of the century recounted in his own incomparable words”