One of the most controversial parts of the movie Expelled: No Intelligence Allowed was the segment where Ben Stein interviewed the history professor Richard Weikart about his book, From Darwin to Hitler: Evolutionary Ethics, Eugenics, and Racism in Germany. Darwinists went apoplectic, deriding Stein and Weikart for daring to sully the good name of Darwin by showing the way that Hitler and German scientists and physicians used evolutionary theory to justify some of their atrocities, such as their campaign to kill the disabled. Some critics even denied that the Nazis believed in Darwinism at all. Weikart challenges his critics to examine the evidence in his fascinating sequel, Hitler’s Ethic: The Nazi Pursuit of Evolutionary Progress (Palgrave Macmillan, new in paperback), which examines the role of Darwinism and evolutionary ethics in Hitler’s worldview.

In this work Weikart helps unlock the mystery of Hitler’s evil by vividly demonstrating the surprising conclusion that Hitler’s immorality flowed from a coherent ethic. Hitler was inspired by evolutionary ethics to pursue the utopian project of biologically improving the human race. Hitler’s evolutionary ethic underlay or influenced almost every major feature of Nazi policy: eugenics (i.e., measures to improve human heredity, including compulsory sterilization), euthanasia, racism, population expansion, offensive warfare, and racial extermination. Hitler also believed that morality was biologically innate, so he thought that eliminating the “evil” Jews would bring moral progress.