Exploring the international dimension of the thought of French philosopher Jacques Maritain (1896-1973), the author deals with potential cooperation between peoples pertaining to various religions, cultures and political systems, respect of human rights and the need for a democratic system -also at the international level- for the achievement of peace. The possibility of a common practical thought that could orient actions of people who hold different theoretical positions would allow common good, both at the domestic and the international levels. All human rights declarations are determined by the moral conscience of civilization, in each historical era. Its fulfillment allows preventing dispersion as well as maintaining hope.