Chapter, §

 1   1, 4 |        of marriage, the correct use of conjugal rights, and
 2   2, 10|   Responsible parenthood, as we use the term here, has one further
 3   2, 10|      nature of marriage and its use makes His will clear, while
 4   2, 12|  procreative, is preserved, the use of marriage fully retains
 5   2, 13|        Author of life. Hence to use this divine gift while depriving
 6   2, 15|     consider at all illicit the use of those therapeutic means
 7   2, 16|  reasonable in so many cases to use artificial birth control
 8   2, 16| condemns as always unlawful the use of means which directly
 9   2, 16|      the married couple rightly use a faculty provided them
10   2, 16|   infertile period recurs, they use their married intimacy to
11   2, 17|         grows accustomed to the use of contraceptive methods
12   2, 17|      they may even impose their use on everyone. It could well
13   3, 21|         a serene and harmonious use of their mental and physical