"[W]henever a man or woman, married or unmarried, engaging in sexual intercourse, believe they will or might bring into existence a new human life, and consequently adopt any action — before, during, or after intercourse — specifically intended as an end or means to prevent procreation, they violate the procreative significance of sexual intercourse. They contracept. And contraceptive acts in Catholic tradition have always been judged to be intrinsically evil. (The method adopted to render sex sterile is incidental to the application of the norm.) If contraceptive acts were wrong for married persons, but legitimate for unmarried persons, they would not be wrong per se, would not be intrinsically evil, but circumstantially evil. Although some Catholics hold this, the view seems clearly to be inconsistent with both the Church’s theological and doctrinal traditions."