Any crossing of two beings not at exactly the same level produces a medium between the level of the two parents. This means: the offspring will probably stand higher than the racially lower parent, but not as high as the higher one. Consequently, it will later succumb in the struggle against the higher level. Such mating is contrary to the will of Nature for a higher breeding of all life. The precondition for this does not lie in associating superior and inferior, but in the total victory of the former. The stronger must dominate and not blend with the weaker, thus sacrificing his own greatness. Only the born weakling can view this as cruel, but he after all is only a weak and limited man; for if this law did not prevail, any conceivable higher development of organic living beings would be unthinkable.
The consequence of this racial purity, universally valid in Nature, is not only the sharp outward delimitation of the various races, but their uniform character in themselves. The fox is always a fox, the goose a goose, the tiger a tiger, etc., and the difference can lie at most in the varying measure of force, strength, intelligence, dexterity, endurance, etc., of the individual specimens. But you will never find a fox who in his inner attitude might, for example, show humanitarian tendencies toward geese, as similarly there is no cat with a friendly inclination toward mice.Therefore, here, too, the struggle among themselves arises less from inner aversion than from hunger and love. In both cases, Nature looks on calmly, with satisfaction, in fact. In the struggle for daily bread all those who are weak and sickly or less determined succumb, while the struggle of the males for the female grants the right or opportunity to propagate only to the healthiest. And struggle is always a means for improving a species' health and power of resistance and, therefore, a cause of its higher development.
If the process were different, all further and higher development would cease and the opposite would occur. For, since the inferior always predominates numerically over the best, if both had the same possibility of preserving life and propagating, the inferior would multiply so much more rapidly that in the end the best would inevitably be driven into the background, unless a correction of this state of affairs were undertaken. Nature does just this by subjecting the weaker part to such severe living conditions that by them alone the number is limited, and by not permitting the remainder to increase promiscuously, but making a new and ruthless choice according to strength and health.
No more than Nature desires the mating of weaker with stronger individuals, even less does she desire the blending of a higher with a lower race, since, if she did, her whole work of higher breeding, over perhaps hundreds of thousands of years, night be ruined with one blow.
Historical experience offers countless proofs of this. It shows with terrifying clarity that in every mingling of Aryan blood with that of lower peoples the result was the end of the cultured people. North America, whose population consists in by far the largest part of Germanic elements who mixed but little with the lower colored peoples, shows a different humanity and culture from Central and South America, where the predominantly Latin immigrants often mixed with the aborigines on a large scale. By this one example, we can clearly and distinctly recognize the effect of racial mixture. The Germanic inhabitant of the American continent, who has remained racially pure and unmixed, rose to be master of the continent; he will remain the master as long as he does not fall a victim to defilement of the blood.
The result of all racial crossing is therefore in brief always the following:
Lowering of the level of the higher race;
Physical and intellectual regression and hence the beginning of a slowly but surely progressing sickness.
-Adolf Hitler, Mein Kampf
The white race will never die, no matter how much anyone wants it to because there exists still today millions of whites that refuse to breed with lesser races. Those whites will raise their children and grandchildren upon the very same beliefs and the cycle will continue forever or until the entire human species is wiped from this earth. Nothing you can do to change that. A lot of people in this post are going off the assumption that ALL whites will breed with other races but that simply isn't the case, millions will never touch another race. The white race lives on.