Encyclical/Catalogs

Encyclicals of Pope Pius IX (1846-78)

• Quanta Cura (1864)

Encyclicals of Pope Leo XIII (1878-1903)

• Inscrutabilis (1878)
• Aeterni Patris (1879)
• Diuternum illud (1881)
• Rerum Novarum (1891)

Encyclicals of Pope Pius X (1903-14)

• Pascendi Dominici Gregis (1907)

Encyclicals of Pope Pius XI (1922-39)

• Quadragesimo Anno (1931)

Encyclicals of Pope Pius XII (1939-58)

Date	Name of encyclical	Subject matter
October 20, 1939	Summi Pontificatus	Function of the state in the modern world
June 29, 1943	Mystici Corporis Christi	Defined the Church as the mystical body of Christ
September 30, 1943	Divino afflante Spiritu	Biblical studies, authorized used of exegetical methods
August 12, 1950	Humani Generis	Certain modern views; also addressed authority of encyclicals generally

Encyclicals of Pope John XXIII (1958-63)

Date	Name of encyclical	Subject matter
June 29, 1959	Ad Petri Cathedram
August 1, 1959	Sacerdotii nostri primordia
September 26, 1959	Grata recordio
November 28, 1959	Princeps pastorum
May 15, 1961	Mater et Magistra	social justice
December 9, 1961	Aeterna dei sapienta
June 14, 1962	Paenitentiam agere
April 10, 1963	Pacem in terris

Encyclicals of Pope Paul VI (1963-78)

• Populorum Progressio (1967)
• Humanae Vitae (1968)

Encyclicals of Pope John Paul II (1978-2005)

• Laborem Exercens (1981)
• Fides et Ratio (1998)