"The Nazi conscience" is not an oxymoron. Although it may be repugnant to conceive of mass murderers acting in accordance with an ethos that they believed vindicated their crimes, the historical record of the Third Reich suggests that indeed this was often the case. The popularizers of antisemitism and the planners of genocide followed a coherent set of severe ethical maxims derived from broad philosophical concepts. As modern secularists, they denied the existence of either a divinely inspired moral law or an innate ethical imperative. Because they believed that concepts of virtue and vice had evolved according to the needs of particular ethnic communities, they denied the existence of universal moral values and instead promoted moral maxims they saw as appropriate to their Aryan community. Unlike the early twentieth-century moral philosophers who saw cultural relativism as an argument for tolerance, Nazi theorists drew the opposite conclusion. Assuming that cultural diversity breeds antagonism, they asserted the superiority of their own communitarian values above all others.
- From The Nazi Conscience by Claudia Koonz