"Let me suggest that Dr. Galton's concession to the fact that there are differences of type to consider is only the beginning of a very big descent of concession, that may finally carry him very deep indeed. Eugenics, which is really only a new word for the popular American term "stirpiculture," seems to me to be a term that is not without its misleading implications. It has in it something of that same lack of a fine appreciation of facts that enabled Herbert Spencer to coin those two most unfortunate terms, "evolution" and "the survival of the fittest." The implication is that the best reproduces and survives. Now really it is' the better that survives, and not the best. The real fact of the case is that in the all-around result the inferior usually perish, and the average of the species rises, but not that any exceptionally favorable variations get together and reproduce. I believe that now and always the conscious selection of the best for reproduction will be impossible; that to propose it is to display a fundamental misunderstanding of what individuality implies. The way of nature has always been to slay the hindmost, and there is still no other way, unless we can prevent those who would become the hindmost being born. It is in the sterilization of failures, and not in the selection of successes for breeding, that the possibility of an improvement of the human stock lies."
January 1, 1970
https://en.wikiquote.org/wiki/Eugenics