Fr. Peter Ryan, SJ, Executive Director of the Secretariate of Doctrinal and Canonical Affairs for the USSCB, discusses the pivotal role played by a Polish Cardinal in the formation of the document in this excerpt from his talk entitled “Humanae Vitae in Historical and Social Perspective”.  Fr. Ryan’s talk was part of the “Humanae Vitae at 45: Life, Liberty, and the Pursuit of Holiness” Conference.