Pius XII wrote the following just after the outbreak of war in 1939. His words should be studied with the UN attack on the Church in mind. Contrast the great pope's realistic assessment of the international situation with Pope Paul's dream of 1965. It is time that the leading churchmen return to such sound doctrine, avoiding niceties and foolish compromises. One does not compromise truth with a lie.
...We limit Ourselves to some fundamental observations.
28. The present age, Venerable Brethren, by adding new errors to the doctrinal aberrations of the past, has pushed these to extremes which lead inevitably to a drift towards chaos. Before all else, it is certain that the radical and ultimate cause of the evils which We deplore in modern society is the denial and rejection of a universal norm of morality as well for individual and social life as for international relations; We mean the disregard, so common nowadays, and the forgetfulness of the natural law itself, which has its foundation in God, Almighty Creator and Father of all, supreme and absolute Lawgiver, all-wise and just Judge of human actions. When God is hated, every basis of morality is undermined; the voice of conscience is stilled or at any rate grows very faint, that voice which teaches even to the illiterate and to uncivilized tribes what is good and what is bad, what lawful, what forbidden, and makes men feel themselves responsible for their actions to a Supreme Judge.
29. The denial of the fundamentals of morality had its origin, in Europe, in the abandonment of that Christian teaching of which the Chair of Peter is the depository and exponent. That teaching had once given spiritual cohesion to a Europe which, educated, ennobled and civilized by the Cross, had reached such a degree of civil progress as to become the teacher of other peoples, of other continents. But, cut off from the infallible teaching authority of the Church, not a few separated brethren have gone so far as to overthrow the central dogma of Christianity, the Divinity of the Savior, and have hastened thereby the progress of spiritual decay.
30. The Holy Gospel narrates that when Jesus was crucified "there was darkness over the whole earth" (Matthew xxvii. 45); a terrifying symbol of what happened and what still happens spiritually wherever incredulity, blind and proud of itself, has succeeded in excluding Christ from modern life, especially from public life, and has undermined faith in God as well as faith in Christ. The consequence is that the moral values by which in other times public and private conduct was gauged have fallen into disuse; and the much vaunted civilization of society, which has made ever more rapid progress, withdrawing man, the family and the State from the beneficent and regenerating effects of the idea of God and the teaching of the Church, has caused to reappear, in regions in which for many centuries shone the splendors of Christian civilization, in a manner ever clearer, ever more distinct, ever more distressing, the signs of a corrupt and corrupting paganism: "There was darkness when they crucified Jesus" (Roman Breviary, Good Friday, Response Five).
31. Many perhaps, while abandoning the teaching of Christ, were not fully conscious of being led astray by a mirage of glittering phrases, which proclaimed such estrangement as an escape from the slavery in which they were before held; nor did they then foresee the bitter consequences of bartering the truth that sets free, for error which enslaves. They did not realize that, in renouncing the infinitely wise and paternal laws of God, and the unifying and elevating doctrines of Christ's love, they were resigning themselves to the whim of a poor, fickle human wisdom; they spoke of progress, when they were going back; of being raised, when they groveled; of arriving at man's estate, when they stooped to servility. They did not perceive the inability of all human effort to replace the law of Christ by anything equal to it; "they became vain in their thoughts" (Romans i. 21).
32. With the weakening of faith in God and in Jesus Christ, and the darkening in men's minds of the light of moral principles, there disappeared the indispensable foundation of the stability and quiet of that internal and external, private and public order, which alone can support and safeguard the prosperity of States.