1: Appeal to the Heads of the Warring Peoples (1 August 1917): AAS 9 (1917), 423. 2: No. 77. 3: Ibid., 78. 4: John Paul II, Message for the 2004 World Day of Peace, 9. 5: Cf. John Paul II, Address to the Fiftieth General Assembly of the United Nations (5 October 1995),[...] 6: De Civitate Dei, XIX, 13. 7: No. 79. 8: Ibid. 9: Message for the 2002 World Day of Peace, 6. 10: Ibid.