It is certainly true that, in one important sense, the Nazis sought to politicize the sciences. - Robert N. Proctor

The appropriate critique of ... sciences is not that they are not "objective" but that they are partial, or narrow, or directed towards ends which one opposes. In general, knowledge is no less objective (that is true, or reliable) being in the service of interests.

In early October of 1939, designated by the government as the year of "the duty to be healthy," Hitler authored a secret memo certifying that "Reichsleiter Bouhler and Dr Brandt are hereby commissioned to allow certain specified doctors to grant a mercy death [Gnadentod] to patients judged incurably sick, by critical medical examination."

Nazi philosophers also commonly expressed concerns about cruelty toward animals. In early 1933, Nazi representatives in the Prussian parliament called for legislation banning vivisection.