By Dennis Sadowski, Catholic Herald - The Catholic Church’s teaching on marriage, abortion, human sexuality and contraception is rooted in the same respect for human dignity that guides its work for social justice and care for poor people, Philadelphia Archbishop Charles Chaput told a Catholic University of America audience... It is imperative that the church make known why it upholds its teaching, as reiterated in Blessed Paul VI’s 1968 encyclical “Humanae Vitae” (“Of Human Life”)