distinctions would really define or explain the deeper
differences–the cohesiveness and continuity of these groups. The
deeper differences are spiritual, psychical, differences–
undoubtedly based on the physical, but infinitely transcending
them. The forces that bind together the Teuton nations are,
then, first, their race identity and common blood; secondly, and
more important, a common history, common laws and religion,
similar habits of thought and a conscious striving together for
certain ideals of life. The whole process which has brought
about these race differentiations has been a growth, and the
great characteristic of this growth has been the differentiation
of spiritual and mental differences between great races of
mankind and the integration of physical differences.

The age of nomadic tribes of closely related individuals
represents the maximum of physical differences. They were
practically vast families, and there were as many groups as
families. As the families came together to form cities the
physical differences lessened, purity of blood was replaced by
the requirement of domicile, and all who lived within the city
bounds became gradually to be regarded as members of the group;
i.e., there was a slight and slow breaking down of physical
barriers. This, however, was accompanied by an increase of the
spiritual and social differences between cities. This city
became husbandmen, this, merchants, another warriors, and so on.
The IDEALS OF LIFE for which the different cities struggled were
different. When at last cities began to coalesce into nations
there was another breaking down of barriers which separated
groups of men. The larger and broader differences of color, hair
and physical proportions were not by any means ignored, but