The great problem confronting the world after almost two thousand years remains unchanged. Christ is ever resplendent as the center of history and of life. Men are either with Him and His Church, and then they enjoy light, goodness, order, and peace. Or else they are without Him, or against Him, and deliberately opposed to His Church, and then they give rise to confusion, to bitterness in human relations, and to the constant danger of fratricidal wars...

We feel we must disagree with those prophets of gloom, who are always forecasting disaster, as though the end of the world were at hand.
In the present order of things, Divine Providence is leading us to a new order of human relations which, by men's own efforts and even beyond their very expectations, are directed toward the fulfilment of God's superior and inscrutable designs. And everything, even human differences, leads to the greater good of the Church.

--John XXIII, opening speech to the second Vatican Council