Excerpts from Pope's new encyclical Spe Salvi

VATICAN CITY (Reuters) - Here are excerpts from Pope Benedict's latest encyclical, "Spe Salvi", on the theme of Christian hope. The full encyclical can be found in various languages via the Vatican Web site: here

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The atheism of the nineteenth and twentieth centuries is -- in its origins and aims -- a type of moralism: a protest against the injustices of the world and of world history. A world marked by so much injustice, innocent suffering, and cynicism of power cannot be the work of a good God. A God with responsibility for such a world would not be a just God, much less a good God. It is for the sake of morality that this God has to be contested. Since there is no God to create justice, it seems man himself is now called to establish justice. If in the face of this world's suffering, protest against God is understandable, the claim that humanity can and must do what no God actually does or is able to do is both presumptuous and intrinsically false. It is no accident that this idea has led to the greatest forms of cruelty and violations of justice; rather, it is grounded in the intrinsic falsity of the claim. A world which has to create its own justice is a world without hope. No one and nothing can answer for centuries of suffering. No one and nothing can guarantee that the cynicism of power, whatever beguiling ideological mask it adopts, will cease to dominate the world.

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We have all witnessed the way in which progress, in the wrong hands, can become and has indeed become a terrifying progress in evil. If technical progress is not matched by corresponding progress in man's ethical formation, in man's inner growth, then it is not progress at all, but a threat for man and for the world.

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Science can contribute greatly to making the world and mankind more human. Yet it can also destroy mankind and the world unless it is steered by forces that lie outside it. On the other hand, we must also acknowledge that modern Christianity, faced with the successes of science in progressively structuring the world, has to a large extent restricted its attention to the individual and his salvation. In so doing it has limited the horizon of its hope and has failed to recognize sufficiently the greatness of its task, even if it has continued to achieve great things in the formation of man and in care for the weak and the suffering.

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In this sense it is true that anyone who does not know God, even though he may entertain all kinds of hopes, is ultimately without hope, without the great hope that sustains the whole of life. Man's great, true hope which holds firm in spite of all disappointments can only be God, God who has loved us and who continues to love us "to the end," until all "is accomplished".

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We can free our life and the world from the poisons and contaminations that could destroy the present and the future. We can uncover the sources of creation and keep them unsullied, and in this way we can make a right use of creation, which comes to us as a gift, according to its intrinsic requirements and ultimate purpose. This makes sense even if outwardly we achieve nothing or seem powerless in the face of overwhelming hostile forces. So on the one hand, our actions engender hope for us and for others; but at the same time, it is the great hope based upon God's promises that gives us courage and directs our action in good times and bad.