While the Church exhorts civil authorities to seek peace, not war, and to exercise discretion and mercy in imposing punishment on criminals, it may still be permissible to take up arms to repel an aggressor or to have recourse to capital punishment. There may be a legitimate diversity of opinion even among Catholics about waging war and applying the death penalty, but not however with regard to abortion and euthanasia.
Pope Benedict XVII encourage all of you to discover ever more fully in the Eucharist, the sacrament of Christ's sacrificial love, the inspiration and strength needed to work ever more generously for the spread of God's Kingdom and the growth of the civilization of love.
Pope Benedict XVIFor each one of you, as for the apostles, the encounter with the divine Teacher who calls you friends may be the beginning of an extraordinary venture: that of becoming apostles among your contemporaries to lead them to live their own experience of friendship with God, made Man, with God who has made himself my friend.
Pope Benedict XVI[The atheist believes] a world marked by so much injustice, innocent suffering, and cynicism of power cannot be the work of a good God.
Pope Benedict XVI