Publication of Encyclical Pascendi Dominici Gregis
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Pope Pius X
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In some respects, the pontificate of Pius X represents the height of the “Prisoner of the Vatican” papacy, which reached back to the loss of the Papal States and the declaration of papal infallibility at the First Vatican Council during the pontificate of Pius IX. Not long after Leo XIII’s condemnation of Americanism in the 1899 encyclical Testem Benevolentiae Nostrae and Pius X’s attack on Modernist biblical interpretation in the 1907 document Lamentabili Sane Exitu, Pius X issued the 1907 encyclical Pascendi Dominici Gregis, which classified Modernism as "the synthesis of all heresies." Pascendi was followed by the introduction of an anti-Modernist oath in 1910, which was required to be sworn by all priests and theologians of the Catholic Church. Together, these served to halt any further development of alleged Modernism in Catholic theology for several decades.
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Pascendi Dominici Gregis, title page- Internet Archive

Pope Pius X portrait- Hathi Trust- from Life of Pius X by Monsignor E. Canon Schmitz

Pope Pius X portrait- Internet Archive- from Life of His Holiness Pope Pius X

Pope Pius X portrait 2- Hathi Trust- from Life of Pius X by Monsignor E. Canon Schmitz
Book/Journal Source(s)
Appleby, R. Scott, 1992. "Church and Age Unite!": The Modernist Impulse in American Catholicism. Notre Dame, IN: University of Notre Dame Press.
Heaney, J.J., 2003. Pascendi. Detroit: Thomson/Gale; Washington, DC: The Catholic University of America.Notes: In New Catholic Encyclopedia, Vol. 10, 2nd ed.: 912-913.)
Web Source(s)
Pascendi Dominici Gregis Encyclical of Pope Pius X on the Doctrines of the Modernists
Web Page Contributor
William S. Cossen
Affliated with: Pennsylvania State University, Ph.D. in History

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