Twenty years ago, the writer George Weigel coined the phrase “the Truce of 1968” to describe the aftermath of the public dissent from Humanae Vitae, Paul VI’s encyclical reaffirming the Church’s teaching on contraception. In Weigel’s telling, the Church’s failure to publicly discipline the theologians who rejected Humanae Vitae (the Vatican allowed the priests who had dissented publicly to recant privately),…