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" In the course of my intellectual life I experienced very acutely the problem of whether it isn't actually presumptuous to say that we can know the truth - in the face of all our limitations. I also asked myself to what extent it might not be better to suppress this category. In pursuing this question, however, I was able to observe and also to grasp that relinquishing truth doesn't solve anything but, on the contrary, leads to the tyranny of caprice. In that case, the only thing that can remain is really what we decide on and can replace at will. Man is degraded if he can't know truth, if everything, in the final analysis, is just the product of an individual or collective decision.
In this way it became clear to me how important it is that we don't lose the concept of truth, in spite of the menaces and perils that it doubtless carries with it. It has to remain as a central category. As a demand on us that doesn't give us rights but requires, on the contrary, our humility and our obedience and can lead us to the common path. "
― Benedict XVI
4
" The great question that will be with us throughout this entire book: What did Jesus actually bring, if not world peace, universal prosperity, and a better world? What has he brought?
The answer is very simple: God.... He has brought God, and now we know his face, now we can call upon him. Now we know the path that we human beings have to take in this world. Jesus has brought God and with God the truth about our origin and destiny: faith, hope and love. It is only because of our hardness of heart that we think this is too little. Yes indeed, God's power works quietly in this world, but it is the true and the lasting power. Again and again, God's cause seems to be in its death throes. Yet over and over again it proves to be the thing that truly endures and saves. "
― Benedict XVI , Jesus of Nazareth: From the Baptism in the Jordan to the Transfiguration
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" To have Christian hope means to know about evil and yet to go to meet the future with confidence. The core of faith rests upon accepting being loved by God, and therefore to believe is to say Yes, not only to him, but to creation, to creatures, above all, to men, to try to see the image of God in each person and thereby to become a lover. That's not easy, but the basic Yes, the conviction that God has created men, that he stands behind them, that they aren't simply negative, gives love a reference point that enables it to ground hope on the basis of faith. "
― Benedict XVI
16
" Faith, hope and charity go together. Hope is practised through the virtue of patience, which continues to do good even in the face of apparent failure, and through the virtue of humility, which accepts God's mystery and trusts him even at times of darkness. Faith tells us that God has given his Son for our sakes and gives us the victorious certainty that it is really true: God is love! It thus transforms our impatience and our doubts into the sure hope that God holds the world in his hands and that, as the dramatic imagery of the end of the Book of Revelation points out, in spite of all darkness he ultimately triumphs in glory. Faith, which sees the love of God revealed in the pierced heart of Jesus on the Cross, gives rise to love. Love is the light—and in the end, the only light—that can always illuminate a world grown dim and give us the courage needed to keep living and working. Love is possible, and we are able to practise it because we are created in the image of God. To experience love and in this way to cause the light of God to enter into the world—this is the invitation I would like to extend with the present Encyclical. "
― Benedict XVI , God Is Love: Deus Caritas Est