“When couples, by means of recourse to contraception, separate these two meanings that God the Creator has inscribed in the being of man and woman and in the dynamism of their sexual communion, they act as 'arbiters' of the divine plan and they 'manipulate' and degrade human sexuality—and with it themselves and their married partner—by altering its value of 'total' self-giving. Thus the innate language that expresses the total reciprocal self-giving of husband and wife is overlaid, through contraception, by an objectively contradictory language, namely, that of not giving oneself totally to the other. This leads not only to a positive refusal to be open to life, but also to a falsification of the inner truth of conjugal love, which is called upon to give itself in personal totality.”
CV