Human pride and egoism always create divisions, build walls of indifference, hate and violence. The Holy Spirit, on the other hand, makes hearts capable of understanding the languages of all, as he re-establishes the bridge of authentic communication between earth and Heaven.
Pope Benedict XVIWhile 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 XVIA united humanity will be able to confront the many troubling problems of the present time: from the menace of terrorism to the humiliating poverty in which millions of human beings live, from the proliferation of weapons to the pandemics and the environmental destruction which threatens the future of our planet.
Pope Benedict XVI