Ridling, Philosophy Then and Now: A Look Back at 26 Centuries of Thought
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of anthropologists. Each of the basic goods is regarded as equally
fundamental; there is no hierarchy among them.
It would, of course, be possible to hold a consequentialist ethic that
identified several basic human goods of equal importance and judged actions
by their tendency to produce or maintain these goods. Thus, if life is a good,
any action that led to a preventable loss of life would, other things being
equal, be wrong. Natural law ethics, however, rejects this consequentialist
approach. It makes the claim that it is impossible to measure the basic goods
against each other. Instead of engaging in consequentialist calculations, the
natural law ethic is built on the absolute prohibition of any action that aims
directly against any basic good. The killing of the innocent, for instance, is
always wrong, even if somehow killing one innocent person were to be the
only way of saving thousands of innocent people. What is not adequately
explained in this rejection of consequentialism is why the life of one innocent
person – about whom, let us say, we know no more than that he is innocent –
cannot be measured against the lives of a thousand innocent people about
whom we have precisely the same information.
Natural law ethics does allow one means of softening the effect of its
absolute prohibitions. This is the doctrine of double effect, traditionally
applied by Roman Catholic writers to some cases of abortion. If a pregnant
woman is found to have a cancerous uterus, the doctrine of double effect
allows a doctor to remove the uterus notwithstanding the fact that such action
will kill the fetus. This allowance is made not because the life of the mother is
regarded as more valuable than the life of the fetus, but because in removing
the uterus the doctor is held not to aim directly at the death of the fetus.
Instead, its death is an unwanted and indirect side effect of the laudable act of
removing a diseased organ. On the other hand, a different medical condition