Fritz Lenz

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Fritz Lenz (March 9, 1887 in Pflugrade, Pommern – July 6, 1976 in Göttingen ) was a German geneticist and influential specialist in "racial hygiene" during the Third Reich.

The pupil of Alfred Ploetz, Lenz took over the publication of the magazine "Archives in Racial and Social Biology" from 1913 to 1933 and received in 1923 the first chair in eugenics in Munich. In 1933 he came to Berlin where he established the first specific department devoted to eugenics, at the Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics.

Lenz specialised in the field of the transmission of hereditary human diseases and "racial health". The results of his research were published in 1921 and 1932 in collaboration with Erwin Baur and Eugen Fischer in two volumes that were later combined under the title Human Heredity Teaching and Racial Hygiene (1936).

This work and his theory of "race as a value principle" placed Lenz and his two colleagues in the position of Germany's leading racial theorists. Their ideas provided scientific justificaton for Nazi ideology, in particular its emphasis on the superiority of the Nordic race and the desirability of eliminating allegedly inferior strains of humanity - or "life unworthy of life". Lenz was a member of the "Committee of Experts for Population and Racial Policy".

For Lenz human genetics established that the connection between racial identity and human nature was actually physical in character, and thus validated the racialised politics of the Nazis. Thus he justified the Nuremberg laws of 1938 in this way:

As important as the external features for their evaluation is the lineage of individuals. A blond Jew is also a Jew. Yes, there are Jews who have most of the external features of the Nordic race, but who nevertheless display Jewish mental tendencies. The legislation of the National Socialist state therefore properly defines a Jew not by external race characteristics, but by descent.^[1]

Likewise, Lenz took the view that Slavs were inferior to Nordic peoples, and that they threatened to "overrun the superior Volk." In 1940, Lenz advised the SS that "The resettlement of the eastern zone is...the most consequential task of racial policy. It will determine the racial character of the population living there for centuries to come."

After the war Lenz continued to work as a geneticist as Professor at the University of Goettingen. When questioned Lenz said that the Holocaust would undermine the study of human genetics and racial theory. He continued to consider that eugenic theories of racial differences had been scientifically proven.