Evolution amongst the higher animals takes place between competing tribes and sub-species…
If a nation with a more advanced, more specialised, or in any way superior set of genes mingles with, instead of exterminating, an inferior tribe, then it commits racial suicide, and destroys the work of thousands of years of biological isolation and natural selection…
There is no way of eliminating undesirable genetic qualities except by the ‘line,’ that is by preventing the individual who carries the genes from reproducing at all. If one does not wish to go so far as that, then one must at least prevent cross-breeding between healthy and unhealthy stock, for once the entire stock is contaminated there is no solution other than the annihilation of the entire species…
If having discovered what to do, we disregard those laws, our fate is of our own choosing. Those who are unfit can improve their prospects only by intermarriage with those who are fit. Those who are fit can suitably destroy their own prospects by marriage with those who are unfit. Already our ancestors have left us a very tangled skein to wrestle with, but if we follow the dictates of the eugenicist, there is the hope always that some sound stock will survive.
Today, the people of the Western world need to come to the realization of this all-important fact as soon as it may, otherwise the patterns will be lost, and we will have instead of healthy races which breed true, and produce generally healthy stock in their own likeness, only a confused mass of genetic qualities good and bad all mingled together, producing repeated failure, and unable to eliminate these failures, no matter how far science may advance. Matters of genetics are absolute and final, and damage once done, can only too rarely, owing to the nature of things, be undone.
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This is a passage from the third chapter of Eugenics and Race, a booklet now available at 50% off from Daybreak Publications (here).