The teaching of Humanae vitae on contraception is an instance of the ordinary and universal magisterium, and as such is irreformable, a moral theologian has said in response to a statement from the Pontifical Academy for Life. Father Thomas Petri, O.P., president of the Dominican House of Studies in Washington, D.C., noted that even critics of the teaching on contraception have “acknowledged that this was always the Church’s teaching” and that nowhere in the Church’s teaching has there been permissiveness…