During the last four decades, while knowledge of heredity
has been accumulating rapidly, there has been a widespread and
intensive campaign to break down belier in the importance of
heredity in the affairs of men and to establish environment as
the major if not the only factor of significance in determining
the nature of their lives and accomplishments. The purpose of
this campaign has been to win the support of men's minds for
certain educational, social, and political programs.

In order to belittle heredity and establish environmentalism
in our thinking, it was necessary to promote the idea that all
babies born into the world arrive with essentially equal endow-
ments and that subsequent differences are the result of forces
outside the individual. Through the use of clever sophistry,
and much repetition, great progress has been made in establish-
ing the thought that all men are equal biologically--not merely
equal in their right to justice. As a result of persistent mental

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