"[N]o reason, however grave, may be put forward by anything intrinsically against nature may become conformable to nature and morally good. Since, therefore, the conjugal act is destined primarily by nature for the begetting of children, those who in exercising it deliberately frustrate its natural power and purpose, sin against nature, and commit a deed which is shameful and intrinsically vicious. Small wonder, therefore, if Holy Writ bears witness that the Divine Majesty regards with greatest detestation this horrible crime, and at times has punished it with death."