Humanae Vitae is one of Pope Paul VI's great achievements. It demonstrated the power of the Holy Spirit in protecting the Papacy's mission. Monsignor Ignacio Barreiro discusses the campaign in favor of artificial birth control, the Church's study of the issue, the emergence of the encyclical, and the varied reactions to it.

Taken from: My End is My Beginning: The Analogy of Contemporary Christianity With its Ancient Setting - 2001 VonHildebrand Institute