From Darwin to Hitler: Evolutionary Ethics, Eugenics, and Racism in Germany by Richard Weikart was released in 2004 (paperback edition in 2006) with Palgrave Macmillan in New York, a major publisher of historical scholarship. In this compelling and painstakingly researched work of intellectual history, Richard Weikart explains the revolutionary impact Darwinism had on ethics and morality. He demonstrates that many leading Darwinian biologists and social thinkers in Germany believed that Darwinism overturned traditional Judeo-Christian and Enlightenment ethics, especially those pertaining to the sacredness of human life. Many of these thinkers supported moral relativism, yet simultaneously exalted evolutionary “fitness” (especially in terms of intelligence and health) as the highest arbiter of morality. Weikart concludes that Darwinism played a key role not only in the rise of eugenics, but also in euthanasia, infanticide, abortion, and racial extermination, all ultimately embraced by the Nazis. He convincingly makes the disturbing argument that Hitler built his view of ethics on Darwinian principles rather than nihilistic ones. From Darwin to Hitler is a provocative yet balanced work that should encourage a rethinking of the historical impact that Darwinism had on the course of events in the twentieth century.