Leo XIII on what marriage owes to the Church

By Thomas V. Mirus ( bio - articles - email ) | Jan 02, 2026 | In The Catholic Culture Podcast

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Thomas Mirus discusses Pope Leo XIII’s 1880 encyclical Arcanum, on Christian marriage. This was “the first formal and synoptic teaching on marriage since the Council of Trent”—a gap of four centuries. Arcanum is focused on what the Church has done to uplift and protect marriage throughout history. Leo argues at length that the state has no right to usurp the Church’s governance of marriage.

Links

Thomas’s article on Arcanum

Pope Leo XIII, Arcanum

Audiobook of Pius XI’s Casti Connubii

Theme music: “Franciscan Eyes”, written and performed by Thomas Mirus. Download the Catholic Culture Podcast soundtrack.

Thomas V. Mirus is President of Trinity Communications and Director of Podcasts for CatholicCulture.org, hosts The Catholic Culture Podcast, and co-hosts Criteria: The Catholic Film Podcast. See full bio.

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