If practicing contraception is to lie in the language of the body, to practice NFP is to take the Fifth. Natural Family Planning involves restricting sexual relations to infertile periods in the woman’s cycle. Although intercourse during these times is less likely to produce a conception, a couple always remains open to the possibility, having taken no action to render it impossible; therein lies the difference (see Humanae Vitae 16). During fertile periods abstinence is practiced, a sacrifice which shows respect for God’s gift of sex and its proper ends. Conversely, practicing contraception during these times displays a lack of respect for this gift and a focus instead on selfish pleasure. One further difference needs to be pointed out. Contraception is often a practice of convenience, while NFP, to be licit, must be a practice of necessity, requiring “serious motives to space out births, which derive from the physical or psychological conditions of husband and wife, or from external conditions” (16). Thus it is not, as some have accused, “contraception Catholic style.”