"According to Nazis, Homo sapiens had already divided into several races, the Aryan race, had the finest qualities ― rationalism, beauty, integrity, diligence... [and] the potential to turn... into superman. Other races... possessing inferior qualities... [i]f allowed to breed... with Aryans... would adulterate... and doom Homo sapiens to extinction."
January 1, 1970
https://en.wikiquote.org/wiki/Yuval_Noah_Harari