Ratzinger argued that Fundamental Rights do not come from politics but from God.
He sent this message to a conference entitled Laicite' and Liberty. In his letter, he also holds that the liberal state is good if, and only if, it guarantees the right to one's faith and the other fundamental rights as they flow from God.
Ratzinger goes on sayint that Laicite' should not interpreted as in opposition to faith, but instead it should be understood as creating a space for everyone, individuals and groups, where to practice religious convictions.
It is somehow amusing that this Pope invokes a right to religious liberty and pluralism, when so many other times he has attacked pluralism, and any other truth not stemming from his own magisterium as far as religion is concerned.
In much the same way as Wojtila, Ratzinger has a double standard of judgements. When he plays in defense, he uses pluralism and tolerance as a shield from outsiders' attacks. When he plays in attack, he condemns pluralism and tolerance, and admonishes that there is only one truth: that stemming from the Vatican!
It is hard to square those two positions. And it would be very dangerous to accept any claim of the Pope over the interpretation of Fundamental Rights!