The use of the atomic bomb with its indiscriminate killing of women and children, revolts my soul.

Letter (August 8, 1945) to Colonel John Callan O’Laughlin, publisher of Army an Navy Journal, as quoted in Gar Alperovitz, The Decision to Use the Atomic Bomb (1996), p. 459. Cited as "O’Laughlin Correspondence File, Box 171, Post-Presidential Papers, Herbert Hoover Presidential Library"