"...as the Roman Empire was in decline. The disintegration of the key principles of law and of the fundamental moral attitudes underpinning them burst open the dams which until that time had protected peaceful coexistence among peoples. The sun was setting over an entire world. Frequent natural disasters further increased this sense of insecurity. There was no power in sight that could put a stop to this decline."
"Today, [...] For all its new hopes and possibilities, our world is at the same time troubled by the sense that moral consensus is collapsing, consensus without which juridical and political structures cannot function. Consequently the forces mobilized for the defence of such structures seem doomed to failure."
"Alexis de Tocqueville, in his day, observed that democracy in America had become possible and had worked because there existed a fundamental moral consensus which, transcending individual denominations, united everyone. Only if there is such a consensus on the essentials can constitutions and law function. This fundamental consensus derived from the Christian heritage is at risk wherever its place, the place of moral reasoning, is taken by the purely instrumental rationality of which I spoke earlier. In reality, this makes reason blind to what is essential. To resist this eclipse of reason and to preserve its capacity for seeing the essential, for seeing God and man, for seeing what is good and what is true, is the common interest that must unite all people of good will. The very future of the world is at stake."
- ADDRESS OF HIS HOLINESS BENEDICT XVI ON THE OCCASION OF CHRISTMAS GREETINGS TO THE ROMAN CURIA