ABSTRACT
In general biology the term "race" or "variety" is used to designate a group of organisms that physically resemble one another by virtue of their descent from common ancestors. Most living species of animals are more or less clearly differentiated into geographic races. To classify human beings as a race on other than a purely biological basis destroys the proper meaning of the term and removes even the support provided by the one-sided biological argument. "Aryan" is a linguistic designation. Hence "the Aryan race" is a contradiction in terms. The significance of physical heredity in family lines is not to be minimized. But heredity acts only in lines of direct descent, and there is no full unity of descent in any of the existing races. Human populations are too mongrel and too variable to be grouped into races as meaningful as animal varieties.
