It's a superbly crafted speech in which the Holy Father invites our political representatives to see and be informed by the necessary relationship between reason and faith.There's too much to reproduce here, so I contented myself with this extract:
"The central question at issue, then, is this: where is the ethical foundation for political choices to be found? The Catholic tradition maintains that the objective norms governing right action are accessible to reason, prescinding from the content of revelation. According to this understanding, the role of religion in political debate is not so much to supply these norms, as if they could not be known by non-believers – still less to propose concrete political solutions, which would lie altogether outside the competence of religion – but rather to help purify and shed light upon the application of reason to the discovery of objective moral principles. This “corrective” role of religion vis-à-vis reason is not always welcomed, though, partly because distorted forms of religion, such as sectarianism and fundamentalism, can be seen to create serious social problems themselves. And in their turn, these distortions of religion arise when insufficient attention is given to the purifying and structuring role of reason within religion. It is a two-way process. Without the corrective supplied by religion, though, reason too can fall prey to distortions, as when it is manipulated by ideology, or applied in a partial way that fails to take full account of the dignity of the human person. Such misuse of reason, after all, was what gave rise to the slave trade in the first place and to many other social evils, not least the totalitarian ideologies of the twentieth century. This is why I would suggest that the world of reason and the world of faith – the world of secular rationality and the world of religious belief – need one another and should not be afraid to enter into a profound and ongoing dialogue, for the good of our civilization.
Religion, in other words, is not a problem for legislators to solve, but a vital contributor to the national conversation. In this light, I cannot but voice my concern at the increasing marginalization of religion, particularly of Christianity, that is taking place in some quarters, even in nations which place a great emphasis on tolerance. There are those who would advocate that the voice of religion be silenced, or at least relegated to the purely private sphere. There are those who argue that the public celebration of festivals such as Christmas should be discouraged, in the questionable belief that it might somehow offend those of other religions or none. And there are those who argue – paradoxically with the intention of eliminating discrimination – that Christians in public roles should be required at times to act against their conscience. These are worrying signs of a failure to appreciate not only the rights of believers to freedom of conscience and freedom of religion, but also the legitimate role of religion in the public square. I would invite all of you, therefore, within your respective spheres of influence, to seek ways of promoting and encouraging dialogue between faith and reason at every level of national life.
Your readiness to do so is already implied in the unprecedented invitation extended to me today. And it finds expression in the fields of concern in which your Government has been engaged with the Holy See. In the area of peace, there have been exchanges regarding the elaboration of an international arms trade treaty; regarding human rights, the Holy See and the United Kingdom have welcomed the spread of democracy, especially in the last sixty-five years; in the field of development, there has been collaboration on debt relief, fair trade and financing for development, particularly through the International Finance Facility, the International Immunization Bond, and the Advanced Market Commitment. The Holy See also looks forward to exploring with the United Kingdom new ways to promote environmental responsibility, to the benefit of all."