"It does them no good to work for peace as long as feelings of hostility, contempt and distrust, as well as racial hatred and unbending ideologies, continue to divide men and place them in opposing camps. Consequently there is above all a pressing need for a renewed education of attitudes and for new inspiration in public opinion. Those who are dedicated to the work of education, particularly of the young, or who mold public opinion, should consider it their most weighty task to instruct all in fresh sentiments of peace. Indeed, we all need a change of heart as we regard the entire world and those tasks which we can perform in unison for the betterment of our race.
But we should not let false hope deceive us. For unless enmities and hatred are put away and firm, honest agreements concerning world peace are reached in the future, humanity, which already is in the middle of a grave crisis, even though it is endowed with remarkable knowledge, will perhaps be brought to that dismal hour in which it will experience no peace other than the dreadful peace of death."
From Gaudium et Spes, paragraph 82.
