Comment by tonytran2015: Various races created diverse physical traits and characters suitable for their individual environment (niche) that in turn created diverse customs and cultures. That was evolution.
Why don’t human train Dingo dogs or Pitbull dogs to be guide dogs? The answer is obvious and the overriding logic is universal and does not exempt human race.
Human races and cultures should respect one another but forced mixing of races and cultures may be harmful to all races and all cultures.
For this reason, we have nothing in common with chauvinism and imperialism because we would extend to other races peopling the earth the same privileges we claim for ourselves: the right to fashion our lives and our own particular world according to the requirements of our own nature.
And if National Socialism would wish to see the unrestricted mixing of blood avoided for the individual, there is nothing in this to suggest contempt. After all, we Germans ourselves, viewed ethnologically, are a mixture. The National Socialist demand is only that the claims of the blood and the laws of biology should be more closely observed in future.