CCI Editor: Following is a second excerpt from the Vatican document on considerations regarding proposals to give legal recognition to unions between homosexual persons. The full document with extensive footnotes may be accessed at the Vatican website.
III. ARGUMENTS FROM REASON AGAINST LEGAL
RECOGNITION OF HOMOSEXUAL UNIONS
6. To understand why it is necessary to oppose legal recognition of homosexual unions, ethical considerations of different orders need to be taken into consideration.
From the order of right reason
The scope of the civil law is certainly more limited than that of the moral law,(11) but civil law cannot contradict right reason without losing its binding force on conscience.(12) Every humanly-created law is legitimate insofar as it is consistent with the natural moral law, recognized by right reason, and insofar as it respects the inalienable rights of every person.(13) Laws in favour of homosexual unions are contrary to right reason because they confer legal guarantees, analogous to those granted to marriage, to unions between persons of the same sex. Given the values at stake in this question, the State could not grant legal standing to such unions without failing in its duty to promote and defend marriage as an institution essential to the common good.