8 This development coming so rapidly and often in a disorderly fashion, combined with keener awareness itself of the inequalities in the world beget or intensify contradictions and imbalances. Within the individual person there develops rather frequently an imbalance between an intellect which is modern in practical matters and a theoretical system of thought which can neither master the sum total of its ideas, nor arrange them adequately into a synthesis. Likewise an imbalance arises between a concern for practicality and efficiency, and the demands of moral conscience; also very often between the conditions of collective existence and the requisites of personal thought, and even of contemplation. At length there develops an imbalance between specialized human activity and a comprehensive view of reality. As for the family, discord results from population, economic and social pressures, or from difficulties which arise between succeeding generations, or from new social relationships between men and women. Differences crop up too between races and between various kinds of social orders; between wealthy nations and those which are less influential or are needy; finally, between international institutions born of the popular desire for peace, and the ambition to propagate one's own ideology, as well as collective greeds existing in nations or other groups. What results is mutual distrust, enmities, conflicts and hardships. Of such is man at once the cause and the victim.
Source: Gaudium et Spes (Vatican.va)