A famous Argentinian nun has said that Pope Francis told her that several forms of contraception could be permissible to stop those women who want to avoid pregnancy from choosing abortion. It wasn’t long ago that the idea of a pope promoting contraceptive use — an intrinsic evil, condemned infallibly by the Church — would have seemed impossible. But in recent years, we have seen multiple indications that for Francis, the existing boundaries on moral teaching are far too rigid for his liking.In 2016, in the wake of a scare that the Zika virus was causing serious birth defects in the babies...