Pope Leo XIII's papal encyclical on the subject of Freemasonry in Italy, known both by its Italian incipit Dall'alto dell'Apostolico Seggio and its Latin incipit Ab apostolici Solii celsitudine, was a promulgated on 15 October 1890.

[1] It dealt with Freemasonry in Italy, condemning the contemporary course of public affairs in Italy as the realization of the "Masonic programme".

This "programme" was said to involve a "deadly hatred of the Church", the abolition of religious instruction in schools and the absolute independence of civil society from clerical influence.

[2] This article related to an official document of the Catholic Church is a stub.

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