AlterNet: Life Begins at ‘Want a Cigarette?’:
In Christian terms, full humanity has never been associated merely with material substance. Declaring that a human soul comes into being fully formed at the moment of conception is logically at odds with its status as an organ of informed choice and goes against the whole thrust of the born-again movement. What I find so curious about the right-to-life position on the fertilized egg is its astounding materialism: A zygote has neither brain nor mind and no ability whatever to accept or reject the existence of a supreme being. A “person” — especially a Christian person — is a being of free will. To extend that definition to a single cell is theologically absurd.
in case you did not know.