Quo graviora (1825)
| Quo graviora mala Latin for 'The graver the evils' Papal bull of Pope Leo XII  | |
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| Signature date | 13 March 1825 | 
| Subject | Condemnation of Freemasonry | 
| Text | |
Quo graviora was an apostolic constitution promulgated by Pope Leo XII on 13 March 1825, in which he decreed the prohibition of membership in Masonic lodges in perpetuity.
See also
- Anti-Masonry
 - Declaration concerning status of Catholics becoming Freemasons
 - Papal ban of Freemasonry
 - Papal documents relating to Freemasonry
 
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