Quadragesimo anno photograph

Quadragesimo Anno

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Originally published May 15, 1931
Authors Pope Pius XI
DateMay 15, 1931
Numberpontificate
SubjectOn the reconstruction of the social order
Original languagesEnglish, Latin
Date of Reg.
Date of Upd.
ID2335069
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About Quadragesimo Anno


Quadragesimo anno is an encyclical issued by Pope Pius XI on 15 May 1931, 40 years after Leo XIII's encyclical Rerum novarum, further developing Catholic social teaching. Unlike Leo XIII, who addressed the condition of workers, Pius XI discusses the ethical implications of the social and economic order.

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