Theodore Roosevelt, The Great Adventure (vol. 19 of The Works of Theodore Roosevelt, national ed.), chapter 1, opening sentences, p. 243 (1926). Douglas MacArthur, speech, July 14, 1935, at the annual reunion of veterans of the Rainbow (42d) Infantry Division, World War I, said, "Only those are fit to live who are not afraid to die."—A Soldier Speaks: Public Papers and Speeches of General of the Army Douglas MacArthur, p. 70 (1965).https://en.wikiquote.org/wiki/Living