"Peace is not merely the absence of war; nor can it be reduced solely to the maintenance of a balance of power between enemies; nor is it brought about by dictatorship. Instead, it is rightly and appropriately called an enterprise of justice. Peace results from that order structured into human society by its divine Founder, and actualized by men as they thirst after ever greater justice. The common good of humanity finds its ultimate meaning in the eternal law. But since the concrete demands of this common good are constantly changing as time goes on, peace is never attained once and for all, but must be built up ceaselessly. Moreover, since the human will is unsteady and wounded by sin, the achievement of peace requires a constant mastering of passions and the vigilance of lawful authority.But this is not enough. This peace on earth cannot be obtained unless personal well-being is safeguarded and men freely and trustingly share with one another the riches of their inner spirits and their talents. A firm determination to respect other men and peoples and their dignity, as well as the studied practice of brotherhood are absolutely necessary for the establishment of peace. Hence peace is likewise the fruit of love, which goes beyond what justice can provide."