Octogesima adveniens

Octogesima Adveniens Latin for 'The eightieth anniversary' Letter of Pope Paul VI
Signature date	14 May 1971
Subject	Catholic social teaching
Text	In Latin In English
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Social teachings of the papacy Distributism Solidarity Subsidiarity Tranquillitas ordinis
Pope Leo XIII Rerum novarum
Pope Pius XI Divini redemptoris Mit brennender Sorge Non abbiamo bisogno Quadragesimo anno
Pope Pius XII Social teachings
Pope John XXIII Mater et magistra Pacem in terris
Second Vatican Council Dignitatis humanae Gaudium et spes
Pope Paul VI Octogesima adveniens Populorum progressio
Pope John Paul II Laborem exercens Sollicitudo rei socialis Centesimus annus Evangelium vitae
Pope Benedict XVI Caritas in veritate
Pope Francis Evangelii gaudium Laudato si' Fratelli tutti
Other figures Gaspard Mermillod René de La Tour du Pin Heinrich Pesch Dorothy Day Óscar Romero Joseph Bernardin Hilaire Belloc G. K. Chesterton
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Octogesima adveniens (The eightieth anniversary) is the incipit of the 14 May 1971 Apostolic Letter addressed by Pope Paul VI to Cardinal Maurice Roy, president of the Pontifical Council for the Laity and of the Pontifical Council for Justice and Peace, on the occasion of the eightieth anniversary of Pope Leo XIII's encyclical Rerum novarum. Generally known as A Call to Action on the Eightieth Anniversary of Rerum novarum, it is an Apostolic Letter which discusses themes such as securing democratic foundations in society.