| Summi Pontificatus Latin for 'Of the Supreme Pontificate' Encyclical of Pope Pius XII | |
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| Signature date | 20 October 1939 |
| Subject | On the Unity of Human Society |
| Number | 1 of 41 of the pontificate |
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Summi Pontificatus is an encyclical of Pope Pius XII published on 20 October 1939. The encyclical is subtitled "on the unity of human society".[1] It was the first encyclical of Pius XII and was seen as setting a tone for his papacy. It criticizes what it saw as major errors of the time, such as ideologies of racism, cultural superiority, and the totalitarian state. It also sets the theological framework for future encyclical letters such as Mystici corporis Christi (1943). The encyclical laments the occupation of Poland, denounces the Molotov–Ribbentrop Pact, and calls for a restoration of independent Poland.
- ^ Summi Pontificatus, October 20, 1939; AAS 31 (1939) 423 ff.