To wage war on misery and to struggle against injustice is to promote, along with improved conditions, the human and spiritual progress of all men, and therefore the common good of humanity. Peace cannot be limited to a mere absence of war, the result of an ever precarious balance of forces. No, peace is something that is built up day after day, in the pursuit of an order intended by God, which implies a more perfect form of justice among men.
Pope Paul VIThe world calls for and expects from us simplicity of life, the spirit of prayer, charity towards all, especially towards the lowly and the poor, obedience and humility... Without this mark of holiness, our word will have difficulty in touching the heart of modern man. It risks being vain and sterile.
Pope Paul VIPhysics does not change the nature of the world it studies, and no science of behavior can change the essential nature of man, even though both sciences yield technologies with a vast power to manipulate the subject matters.
Pope Paul VIThe command to the Twelve to go out and proclaim the Good News is also valid for all Christians, though in a different way.... the Good News of the kingdom which is coming and which has begun is meant for all people of all times. Those who have received the Good News and who have been gathered by it into the community of salvation can and must communicate and spread it.
Pope Paul VI