Octogesima Adveniens is the name of an
Apostolic Letter written by
Pope Paul VI to
Maurice Cardinal Roy, who at the time was serving as the President of the Council of the Laity and of the Pontifical Commission for Justice and Peace. It was
promulgated on
May 14,
1971 and was written for the occasion of the eightieth anniversary of
Pope Leo XIII's
encyclical Rerum Novarum. It discusses themes such as securing democratic foundations in society.
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