117 We therefore consider it Our duty as the vicar on earth of Jesus Christ—the Saviour of the world, the Author of peace—and as interpreter of the most ardent wishes of the whole human family, in the fatherly love We bear all mankind, to beg and beseech mankind, and above all the rulers of States, to be unsparing of their labor and efforts to ensure that human affairs follow a rational and dignified course.
Source: Pacem in Terris (Vatican.va)