"If a fertilized egg is fully human, then all terminations of pregnancy at any stage and for any reason are to be regarded as murder. This offends against the natural or instinctive feeling in favor of the pregnant woman and the occupant of her womb, because it blurs the distinction between an embryonic group of cells and a human with a central nervous system. The distinction between abortions in the first and third trimesters, a distinction which speaks both to our ability to avoid casuistry and to our inborn wish to have a say in our own fates, is therefore null and void in Catholic teaching."