Many of them, such as the economic and social changes we have suggested
in earlier chapters, are an important part of eugenics. Every euthenic
measure should be scrutinized from the evolutionary standpoint; if it is
eugenic as well as euthenic, it should be whole-heartedly favored; if it
is dysgenic but euthenic it should be condemned or adopted, according to
whether or not the gain in all ways from its operation will exceed the
damage.
In general, euthenics, when not accompanied by some form of selection
(i. e., eugenics) ultimately defeats its own end. If it is accompanied
by rational selection, it can usually be indorsed. Eugenics, on the
other hand, is likewise inadequate unless accompanied by constant
improvement in the surroundings; and its advocates must demand euthenics
as an accompaniment of selection, in order that the opportunity for
getting a fair selection may be as free as possible. If the euthenist
likewise takes pains not to ignore the existence of the racial factor,
then the two schools are standing on the same ground, and it is merely a
matter of taste or opportunity, whether one emphasizes one side or the
other. Each of the two factions, sometimes thought to be opposing, will
be seen to be getting the same end result, namely, human progress.
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