10 Such an act of consecration, since it can establish or draw tighter the bonds which naturally connect public affairs with God, gives to States a hope of better things. In these latter times especially, a policy has been followed which has resulted in a sort of wall being raised between the Church and civil society. In the constitution and administration of States the authority of sacred and divine law is utterly disregarded, with a view to the exclusion of religion from having any constant part in public life. This policy almost tends to the removal of the Christian faith from our midst, and, if that were possible, of the banishment of God Himself from the earth. When men's minds are raised to such a height of insolent pride, what wonder is it that the greater part of the human race should have fallen into such disquiet of mind and be buffeted by waves so rough that no one is suffered to be free from anxiety and peril? When religion is once discarded it follows of necessity that the surest foundations of the public welfare must give way, whilst God, to inflict on His enemies the punishment they so richly deserve, has left them the prey of their own evil desires, so that they give themselves up to their passions and finally wear themselves out by excess of liberty.
Source: Annum Sacrum (Vatican.va)