PaulPopeVI encyclical letter Humanae vitae, n. 16, Vatican English translation.
2.
Vatican English translation.
3.
NC News Service translation, published by St. Paul Books & Media; “”serious motives”” is also used in the Ignatius Press translation (San Francisco, 1978).
4.
NC News Service translation, published by St. Paul Books & Media; “”serious motives””, n. 10.
5.
PiusPopeXII“Address to Congress of the Italian Catholic Union of Midwives” (October 29, 1951), in The Major Addresses of Pope Pius XII, vol 1, ed. Vincent Yzermans (St. Paul: North Central Publishing Co., 1961), 160-76.
6.
Humanae vitae, n 10: “”With regard to physical, economic, psychological, and social conditions, responsible parenthood is exercised by those who prudently and generously decide to have more children, and by those who, for serious reasons and with due respect to moral precepts, decide not to have additional children for either a certain or an indefinite period of time.”” See also Humanae vitae, n. 16.
7.
This canon is quoted as the opening paragraph of the section devoted to Christian marriage in the Catechism of the Catholic Church (1997), n. 1061.
8.
The quote continues: “ A ”provided matrimony be looked at not in the restricted sense as instituted for the proper conception and education of the child, but more widely as the blending of life as a whole and the mutual interchange and sharing thereof.”” Casti connubii (1930), n 24, Vatican English translation.
9.
CouncilVaticanIIGaudium et spes, n. 51.
10.
Germain Grisez, The Way of the Lord Jesus, vol. 3, Difficult Moral Questions (Quincy, IL: Franciscan Press, 1997), 147.
11.
John PaulPopeII encyclical letter Evangelium vitae (1995), n. 92; see also n 11.
12.
Evangelium vitae, n 86.
13.
Some couples may choose to jointly chart the wife's fertility cycle as a way for the husband to remain mindful of the cyclic conditions underlying their fertility. It also may assist his awareness that her fertility is the fertility of the marriage: it is their fertility.
14.
Swiss, moral theologian Martin Rhonheimer, writes: “these spouses live this responsibility by the means of their bodily love, by sexual behavior, modifying this behavior for reasons of responsibility.” Martin Rhonheimer, “Contraception, Sexual Behavior, and Natural Law: Philosophical Foundation of the Norm of ‘Humanae Vitae,”’The Linacre Quarterly56.2 (May 1989): 20–57, emphasis added.
15.
Coauthored by Russell Shaw (Huntington, IN: Our Sunday Visitor, Inc., 2003), 35.
