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Pacem in Terris declares that the achievement of universal order depends upon the willingness of all men to meet for the attainment of these practical ends. The Pope summons the Christian believer, guided by prudence, to lead the way and become "a spark of light, a center of love" among his fellow men. But he also makes clear that one more quality is needed. "There can be no peace between men," he warned, "unless there is peace within each one of them; unless, that is, each one builds up within himself the order wished by God."
* Reportedly including the Vatican's Secretary of State, Amleto Cardinal Cicognani, who for many years was apostolic delegate in Washington; his principal assistants, Archbishops Angelo Dell' Acqua and Antonio Samoré; the Vatican Protocol Chief, Consignor Igino Cardinale; and Monsignor Pietro Pavan, a consultant to several curial congregations, who composed the final draft of the Pope's 1961 encyclical on social problems, Mater et Magistra.