Social Encyclical Letters

All Encyclical Letters by the Popes (Chronological Order)

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Rerum Novarum, Leo XIII (15 May 1891)

Quadragesimo Anno, Pius XI (15 May 1931)

Mater et Magistra, John XXIII (15 May 1961)

Pacem in Terris, John XXIII (11 April 1963)

Populorum Progressio, Paul VI (27 March 1967)

Octogesima Adveniens, Apostolic Letter, Paul VI (14 May 1971)

Laborem Exercens, John Paul II (14 September 1981)

Sollicitudo Rei Socialis, John Paul II (30 December 1987)

Centesimus Annus, John Paul II (1 May 1991)

Caritas in veritate, Benedict XVI (29 June 2009)

Laudato si', on the care of our common home, Francis (24 May 2015)