For my closing comment in this week-long celebration of the 45th anniversary of Humanae Vitae, I want to promote our NFP manual, Natural Family Planning: The complete Approach. In a way, this manual summarizes what we have learned and taught to support the encyclical.
Natural Family Planning: The Complete Approach
• This is the only American NFP text that teaches ecological breastfeeding as a form of natural baby spacing. NFPI instruction does not force anyone to breastfeed for any specific duration, but it does empower a couple to make a well informed choice.
• It is the only American NFP text that uses the simple-to-grasp covenant statement of sexuality to explain and support the teaching of Humanae Vitae.
• It is the only American NFP text that teaches the cross-checking signs in such a way that couples can determine the earliest start of postovulation infertility consistent with all the evidence. Thus the start of Phase 3 may be recognized one or two days earlier than with other rules.