>>514907035
2/2
This means that the offspring will indeed be superior to that parent which belongs to a biologically lower order of beings, but not so high as the superior parent. For this reason, it must eventually succumb in any struggle against the higher species. Such mating contradicts the will of Nature towards the selective improvement of life in general. The favourable preliminary to this improvement is not to mate individuals of higher and lower orders of being, but rather to allow the complete triumph of the higher order. The stronger must dominate and not mate with the weaker, which would signify the sacrifice of its own higher nature. Only the born weakling can look upon this principle as cruel, and if he does so, it is merely because he is of a feebler nature and narrower mind, for if such a law did not direct the process of evolution then the higher development of organic life would not be conceivable at all. This urge for the maintenance of the unmixed breed which is a phenomenon that prevails throughout the whole of the natural world, results not only in the sharply defined outward distinction between one species and another, but also in the internal similarity of characteristic qualities which are peculiar to each breed or species. The fox remains always a fox, the goose remains a goose, and the tiger will retain the character of a tiger. The only difference that can exist within the species is in the various degrees of structural strength and active power, in the intelligence, efficiency, endurance, etc., with which the individual specimens are endowed. It would be impossible to find a fox which has a kindly and protective disposition towards geese, just as no cat exists which has a friendly disposition towards mice.

Adolf Hitler, Mein Kampf, 1925/26, Stalag Edition