The conjugal act

Our Predecessor, Pius XI, of happy memory, in his Encyclical Casti Connubii, of December 31, 1930, once again solemnly proclaimed the fundamental law of the conjugal act and conjugal relations: that every attempt of either husband or wife in the performance of the conjugal act or in the development of its natural consequences which aims at depriving it of its inherent force and hinders the procreation of new life is immoral; and that no "indication" or need can convert an act which is intrinsically immoral into a moral and lawful one.

This precept is in full force today, as it was in the past, and so it will be in the future also, and always, because it is not a simple human whim, but the expression of a natural and divine law.

Let Our words be a sure rule for all those cases which require of your profession and your apostolate a clear and firm decision.